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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    International Baccalaureate Diploma programme

    Good Shepherd International School

    Internal Assessment

    May 2016

    Mathematical Studies-Standard level

    opic title! Modeling the temperature "or a #ee$ "or various cities in the #orld%

     

    Candidate name: pranav, kethavarapu

    Candidate number: 001350-0036

    School name: Good shepherd international school

    Supervisor: Mrs !n"elin

    #ord count:

    Mathematics Studies SL-Ma !016

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    Ac$no#ledgements

    $ %ould like to sincerel& ackno%led"e:

    • Mrs !n"elin, m& math teacher %ho "uided me throu"h the pro'ect and

    research process

    • M& $( coordinator, Mrs )imala *ani +acob or providin" me %ith revie%s on

    m& %ork

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    Introduction!

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    able o contents:

     .o opic /a"e .o

    1 Ac$no#ledgements 2

    a&le o" contents '

    3 Introduction (

    )ollection o" data

    5

    6

    2

    4

    10

    11

    1

    13

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    $ have decided to do m& pro'ect on the topic: modelin" the temperature or seven dierent

    cities $ have picked various cities across the "lobe or m& statistical pro'ect randoml& $ have

    started recordin" the temperature o various cities at seven dierent points on the "lobe $

    chose this topic to check %hether there is a model euation or the temperature chan"es

    across the "lobe $t %as interestin" or me to ind that all m& "raphs sho%ed either a cubic or 

    uartic shape o the curve, %hich actuall& surprised me $ had done correlation and re"ression

    to check the linearit& o the euation but mostl& it is not a positive one So $ had tried doin"

    C($C re"ression or m& curve o best it hen to check i the population bet%een the

    temperatures %ere eual or not $ have carried out the one-%a& anova i it is used to i"ure out

    i there are an& note%orth& contrasts bet%een the means or three or more independent

    "roups Conseuentl&, the h&pothesis is accepted, %hich e7presses that the population means

    are all euivalent here %as not much contrast in the means or the temperatures $ there is

    an euation ound like this then $ think the uture predictions o climate shit can be ound

    %ell in advance

     

    $ am "oin" to collect temperatures o seven dierent cities rom dierent time 8ones $

     proceeded %ith m& pro'ect %ork throu"h the belo% sta"es:

    SAG* 1!

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    $n the irst sta"e o m& pro'ect $ have recorded the temperature o various cities dail&,

    calculated in Celsius #hile choosin" the dierent cities $ had taken consideration o the

    dierent time 8ones and picked cities rom dierent time 8ones $ have accumulated the data

    rom http:99%%%timeanddatecom9%eather9 

    SAG* 2!

    $n the second sta"e o m& pro'ect rom the data $ have accumulated $ have done -

    $M;.S$A1@ to the

    ne7t Saturda&>A@ respectivel& hen $ calculated the mean or A1, A and the hi"hest

    C

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    hen a scatter "raph or each da& comparin" %ith Saturda& o the data belo% has been plotted

    to anal&8e %hether it ollo%s linear or cubic re"ression anal&sis

    Saturd

    a

    Sunda

    M"nd

    a

     #uesd

    a

    $ednesd

    a

     #hursd

    a %rida

    Saturd

    aKua&aLumpur !' !6 !' !6 !' !( !( !)

    !' !6 !' !6 !' !( !' !)

    !6 !6 !6 !6 !' !' !' !(

    !6 !6 !6 !6 !6 !' !6 !(

    !6 !6 !6 !5 !6 !' !6 !(

    !6 !6 !6 !5 !6 !' !5 !'

    !6 !5 !6 !5 !6 !' !5 !'

    !6 !5 !6 !5 !6 !' !5 !'

    !6 !6 !' !5 !6 !' !6 !6

    !' !' !( !' !( !' !( !'

    !( 30 30 !) 30 !( 31 !)

    30 31 30 31 31 30 3! 31

    31 33 31 3! 33 !( 33 3!

    33 3* 30 33 3* 30 3* 33

    3* 35 3! 3* 3* 31 3* 33

    3* 35 31 33 30 3! 3* 3!

    3* 31 !' 3! !) 33 33 !(

    !6 30 !' 30 !) 3! 33 !(

    !* 30 !' !) !) 31 3! !)

    !5 !) !' !' !) 31 31 !(

    !5 !) !6 !' !( 30 30 !(

    !6 !) !6 !' !( 30 30 !(

    !6 !( !6 !' !( !) !) !'

    !6 !( !6 !' !( !( !) !'

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    !! !* !6 !( 30 3! 3* 36

    0

    10

    !0

    30

    *0

    f(x) = - 0.06x^3 + 4.95x^2 - 144.83x + 1426.01

    R² = 0.79

    Kua&a Lumpur

    Sunda P"&n"mia& +Sunda,

    M"nda #uesda

    $ednesda #hursda

    %rida Saturda

    he above "raph even thou"h sho%s a pattern o cubic re"ression its not so clear So,

    Separate scatter "raphs o each da& compared %ith Saturda& has been plotted belo%:-

    !! !* !6 !( 30 3! 3* 360

    5

    10

    15

    !0

    !5

    30

    35

    *0

    +., / - 005.3 2 *'3.! - 13(31. 2 136!)

    4 / 0'!

    Kua&a Lumpur-Saturda-Sunda

    Saturda

    Sunda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    !! !* !6 !( 30 3! 3* 36

    0

    10

    !0

    30

    *0

    f(x) = - 0.03x^3 + 2.67x^2 - 74.99x + 720.8

    R² = 0.74

    Kua&a Lumpur-Saturda-M"nda

    M"nda P"&n"mia& +M"nda,

    Saturda

    M"nda

    !! !* !6 !( 30 3! 3* 36

    0

    10

    !0

    30

    *0

    f(x) = - 0.05x^3 + 4.26x^2 - 123.83x + 1213.9

    R² = 0.86

    Kua&a Lumpur-Saturda-#uesda

     #uesda P"&n"mia& +#uesda,

    Saturda

     #uesda

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    !! !* !6 !( 30 3! 3* 36

    0

    10

    !0

    30

    *0

    f(x) = - 0.06x^3 + 5.15x^2 - 147.84x + 1429.24

    R² = 0.76

    Kua&a Lumpur-Saturda-$ednesda

    $ednesda P"&n"mia& +$ednesda,

    Saturda

    $ednesda

    !! !* !6 !( 30 3! 3* 360

    10

    !0

    30

    *0

    f(x) = - 0.02x^3 + 1.5x̂ 2 - 47.4x + 520.57

    R² = 0.55

    Kua&a Lumpur- Saturda-#hursda

     #hursda P"&n"mia& +#hursda,

    Saturda

     #hursda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    !! !* !6 !( 30 3! 3* 36

    0

    10

    !0

    30

    *0

    f(x) = - 0.06x^3 + 5.68x^2 - 166.28x + 1635.34

    R² = 0.65

    Kua&a Lumpur-Saturda-%rida

    %rida P"&n"mia& +%rida,

    Saturda

    %rida

    ;ach "raph above sho%s a clear cubic re"ression euation as a best it or the data

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    #hen an online calculator is used to check %hether the "raph values plotted above are correct

    or not $t "ave the same perect value

    !(=;:

    he table contains the temperatures recorded or a %eek in !msterdam he  R2

     values

    o each o the "raph is also sho%in" positive correlation .o%, to check %hether the same

    happens to other countries, some random "raphs had been plotted belo%

    Saturda Sunda

    M"nda

     #uesda

    $ednesda

     #hursda %rida

    Saturda

    msterdam 11 10 ( 3 5 5 6 '

    11 11 ( 3 * 5 ' 6

    11 10 ( 3 5 5 ' 611 11 ( ! 5 * ' 511 11 ' ! 5 * 6 5

    11 11 ' ! 5 5 ' 511 11 6 1 5 5 ' 511 11 6 1 * 5 ' *

    11 11 6 1 * ' 6 *

    11 11 * 1 * ' 6 *11 11 * 1 * ' ' 311 11 * ! * ' 5 *11 11 3 3 * 6 5 *

    11 11 * * 5 6 6 *11 11 5 * 5 ' ' 5

    11 11 ' * 5 ( ( 511 11 ( 5 6 ) ( '11 11 ( 5 ' ) ) )

    11 11 ) 5 ( 10 ) (11 10 10 ' ) 10 ) )1! 10 10 ( 10 11 10 10

    13 10 ) ( 11 ) 10 1113 10 11 ) 10 1! 10 11

    13 10 11 10 11 1! 11 1!13 10 1! 11 10 1! 10 1!

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    13 10 10 11 11 1! 11 1113 10 1! 11 11 13 1! 13

    1* 11 1! 11 11 13 11 131* 10 13 ) 11 1! 1! 1*13 10 11 ) ) 13 11 13

    13 10 1! 10 ) 13 1! 1*

    13 10 11 10 10 1* 1! 1*13 10 11 11 11 13 1! 1*15 10 11 11 11 13 11 1*15 10 10 10 10 1! 11 13

    1* 10 11 11 11 1! 1! 1315 10 10 10 10 1! 11 1!1* 10 ) 10 10 1! 10 13

    1* 10 ) 10 10 11 11 1313 ) ( ) ) 10 10 1!

    13 ) ' ) ) ) ) 1!1! ) ' ( ( ( ( 1111 ) 6 ' ' ( ( 11

    10 ) 6 ' ' ' ( 1010 ) 5 ' ' ' ( 11

    ) 10 11 1! 13 1* 15 160

    5

    10

    15

    f(x) = 0.12x^3 - 4.64x^2 + 58.16x - 230.25

    R² = 0.33

    msterdam-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sunda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    ) 10 11 1! 13 1* 15 160

    5

    10

    15

    f(x) = - 0.5x^3 + 18.66x^2 - 229.6x + 933.07

    R² = 0.8

    msterdam-Saturda-#uesda

     #uesda P"&n"mia& +#uesda,

    Saturda

     #uesda

    ) 10 11 1! 13 1* 15 160

    5

    10

    15

    f(x) = - 0.31x^3 + 11.67x^2 - 142.15x + 574.01

    R² = 0.8

    msterdam-Saturda-$ednesda

    $ednesda P"&n"mia& +$ednesda,

    Saturda

    Sunda

    $t is ver& clear that it ollo%s a cubic re"ression euation %ith moderate positive correlation

    !(=;3:

    he table 3 contains the temperatures recorded or a %eek in =ondon

    Saturda

    Sunda

    M"nda

     #uesda

    $ednesda

     #hursda

    %rida

    Saturda

    L"nd"

    n 11 11 6 6 ' 5 ' '11 10 5 5 ' 5 6 5

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    11 ) * * ' 5 6 5

    11 ) * * ' 5 6 6

    11 ( 3 3 ' * 6 6

    11 ( 3 3 ' * 6 6

    11 ' * * ( 6 6 6

    11 ' 5 5 ) ' ' '

    1! ( ' ' ) ) ( (

    13 ) ) ) 11 11 ) )

    1* ) ) ) ) 11 10 10

    16 10 ) 11 10 1! 11 1!

    16 10 10 1! ) 1* 1! 13

    1' 10 1! 1! 11 1* 1! 1*

    1' 10 1! 1! 1! 13 1! 1*

    1( 11 1! 13 13 13 1! 13

    1' 11 1! 1! 1* 13 1! 13

    16 11 1! 1! 13 13 11 1!

    15 11 11 11 1! 1! 11 11

    13 ) 11 10 11 1! 10 11

    1! ' ) ) ) 10 ) 10

    1! ' ( ) ( 10 ) )

    1! 6 ' ( ' ( ( )

    11 6 6 ( 6 ' ' (

    10 11 1! 13 1* 15 16 1' 1( 1)0

    5

    10

    15

    +., / - 005.3 2 !1).! - 30'1. 2 1*(13

    4 / 051

    L"nd"n-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sundau

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    10 11 1! 13 1* 15 16 1' 1( 1)0

    5

    10

    15

    +. / 00*.3 - 166.! 2 !*)). - 11631

    4 / 0'6

    L"nd"n-Saturda-$ednesda

    $ednesda P"&n"mia& +$ednesda

    Saturda

    $ednesda

    10 11 1! 13 1* 15 16 1' 1( 1)0

    5

    10

    15

    +. / 006.3 - !(6.! 2 *55. - !!((3

    4 / 0)3

    L"nd"n-Saturda-#hursda

     #hursda P"&n"mia& +#hursda

    Saturda

     #hursda

    ;ven in this case the euation is a cubic one but there is a sli"ht decrease in the value o co

    eicient o determination %hich sa&s that it has a ver& moderate positive correlation

    !(=;:

    he table contains the temperatures recorded or a %eek in Madrid

    Saturda

    Sunda

    M"nda

     #uesda

    $ednesda

     #hursda %rida

    Saturda

    Madrid 16 15 1* 16 1) 1' 1( 1'

    16 13 1* 16 1' 1' 16 1'

    15 13 13 16 1' 16 1* 15

    1' 16 1( 1( 1( 1( 1( 1(

    !1 1) !1 !3 !1 !0 !! !1!3 !! !3 !3 !* !* !3 !!

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    1( !1 !0 !3 !! !! 1( !1

    16 16 1' !0 1) 1( 1' !0

    1* 15 16 1' 1( 1) !0 !1 !! !3 !*0

    !0

    *0

    +., / 00*.3 - !5(.! 2 5!!(. - 3360(

    4 / 0(!

    Madrid-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sunda

    1* 15 16 1' 1( 1) !0 !1 !! !3 !*0

    !0

    *0

    +., / - 0.3 2 00).! 2 !). - 31*1

    4 / 0''

    Madrid-Saturda-#uesda

     #uesda P"&n"mia& +#uesda,

    Saturda

     #uesda

    1* 15 16 1' 1( 1) !0 !1 !! !3 !*0

    !0

    *0

    +., / 005.3 - 30).! 2 5)'. - 3656*

    4 / 0(5

    Madrid-Saturda-#hursda

     #hursda P"&n"mia& +#hursda,

    Saturda

     #hursda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    Dere a"ain, Madrid is havin" a stron" positive correlation but ollo%in" the same cubic

    re"ression

    able 5:

    he table 5 contains the temperatures recorded or a %eek in Melbourne

    Saturda

    Sunda

    M"nda

     #uesda

    $ednesda

     #hursda %rida

    Saturda

    Me&b"urne 13 11 10 10 ( ( ( 13

    13 11 10 10 ' ( ( 13

    13 11 10 10 ' ' ( 1313 11 10 10 ( ' ( 13

    13 11 10 10 ) ( ( 161! 10 10 ) ) 6 ( 1*

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    1! 10 10 ) ) 6 ' 151! 10 10 ) ( 6 ' 15

    11 10 10 ( ( 6 ' 1511 10 10 ( ( 6 6 15

    10 10 10 ( ( 6 5 1511 ) 10 ) ' 6 5 15

    10 ) 10 ) 6 6 ' 1510 10 10 ) 6 6 ) 1610 10 10 ) 6 ( 1* 15

    10 10 10 ) ' ) 1' 1510 10 11 ) 11 11 1) 15

    11 10 11 10 11 13 !0 1511 11 11 10 13 13 !1 16

    11 11 13 11 13 1* !1 1611 1! 13 1! 1* 15 !1 16

    1! 1! 1* 1! 1* 16 !! 1'1! 13 1* 1* 15 1' !! 16

    13 1! 1* 1* 16 1( !! 1'

    13 13 1* 1* 16 1( !! 1)13 15 1* 1* 16 1( !! 1)1* 1* 1* 1* 16 1) !! !0

    1* 15 1* 1* 1' 1) !1 !01* 1* 1* 1* 1' 1) !0 !0

    13 1* 1* 15 1' 1( 1) !113 1* 1* 1* 16 1( 1( !1

    13 13 1* 13 15 1' 1' !!13 13 1* 1* 15 15 16 !!13 13 13 13 15 1* 16 !1

    13 1! 13 1! 13 13 13 !013 1! 13 11 1! 13 13 1)

    13 1! 13 1! 11 1! 13 1(13 11 1! 1! 11 1! 1! 1(

    13 11 1! 1! 11 11 13 1'13 11 11 11 11 10 13 1'

    13 11 10 1! ) 10 13 151! 11 11 11 ( 10 15 1'

    1! 10 11 ) ( ) 1* 151! 10 11 ) ( 10 1* 1*

    11 10 11 ( ( ) 1* 1311 10 11 ' ' ( 13 13

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    )5 10 105 11 115 1! 1!5 13 135 1* 1*50

    5

    10

    15

    !0

    +., / 00(.3 - !*5.! 2 !6*1. - (6!34 / 05(

    Me&b"urne-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sunda

    )5 10 105 11 115 1! 1!5 13 135 1* 1*50

    5

    10

    15

    +. / 013.3 - *3(.! 2 510*. - 1((6)

    4 / 031

    Me&b"urne-Saturda-M"nda

    M"nda P"&n"mia& +M"nda

    Saturda

    M"nda

    )5 10 105 11 115 1! 1!5 13 135 1* 1*50

    5

    10

    15

    !0

    +. / 03(.3 - 1336.! 2 155'1. - 5)'*'

    4 / 03(

    Me&b"urne-Saturda-$ednesda

    $ednesda P"&n"mia& +$ednesda

    Saturda

    $ednesda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    able 6:

    he table 6 contains the temperatures recorded or a %eek in (an"alore

    Saturda

    Sunda

    M"nda

     #uesda

    $ednesda

     #hursda %rida

    Saturda

    an7a&"re !1 !0 !! !3 !* !1 !1 !*

    !! !0 !1 !3 !3 !1 !0 !!

    !) !* !3 !* !5 !* !* !*

    30 !' !( !( !) !) 30 !)

    !0 30 30 31 3! 3! 33 3!

    !0 !! !) 30 !5 !! 31 !!1) !3 !6 !' !* !1 !' !3

    1( !! !* !5 !! !1 !5 !!

    16 1( !0 !! !* !6 !( 30 3!0

    !0

    *0

    +., / 005.3 - 3!).! 2 '!'5. - 503*(

    4 / 033

    an7&"re-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sunda

    16 1( !0 !! !* !6 !( 30 3!0

    !0

    *0

    +. / 00'.3 - *(*.! 2 110*1. - (0!3(

    4 / 0*3

    an7&"re-Saturda-$ednesda

    $ednesda P"&n"mia& +$ednesda

    Saturda

    $ednesda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    16 1( !0 !! !* !6 !( 30 3!0

    !0

    *0

    +., / 01.3 - 6(!.! 2 15103. - 1066)3

    4 / 05

    an7&"re-Saturda-%rida

    %rida P"&n"mia& +%rida,

    Saturda

    %rida

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    able 2:

    Saturda

    Sunda

    M"nda

     #uesda

    $ednesda

     #hursda

    %rida

    Saturda

    ei8in7 1* !1 !0 1' 16 !0 1) 15

    1! 16 1) 1' 1* 1' 1( 1*

    1) 1) !1 1) 1( !0 1) 1(

    !6 !6 !* !! !! !5 !0 !!

    31 30 !' !3 !6 !( !6 !3

    30 30 !' !5 !6 !) !0 !3

    !6 !6 !! !! !3 !6 15 !1

    !* !3 1) 1( !1 !* 1* 1)

    10 15 !0 !5 30 350

    10

    !0

    30

    *0

    +., / 0.3 - 003.! 2 0(. 2 11

    4 / 0)!

    ei8in7-Saturda-Sunda

    Sunda P"&n"mia& +Sunda,

    Saturda

    Sunda

    10 15 !0 !5 30 350

    10

    !0

    30

    +., / 0.3 - 01).! 2 35!. - 1'6

    4 / 0('

    ei8in7-Saturda-M"nda

    M"nda P"&n"mia& +M"nda,

    Saturda

    M"nda

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    10 15 !0 !5 30 350

    10

    !0

    30

    +., / 001.3 - 06.! 2 113'. - *)!)

    4 / 0'3

    ei8in7-Saturda-%rida

    %rida P"&n"mia& +%rida,

    Saturda

    %rida

    Since most o the scatter plots are ollo%in" cubic euation as a best curve o it he ne7t

    step is to check %hether the coeicients o the cubic re"ression euation ound b& the ;7cel

    sheet is correct or not So, Buala =umpurs data Saturda& and Sunda& has been chosen or 

    this calculation

    Groupin" all the values o *  or Buala =umpur in a table

    Sat- sun , . 0%/1

    Saturda&>7@

    Sunda&>&@

    2 6

    2 66 6

    6 6

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    6 6

    6 6

    6 5

    6 5

    6 6

    2 2

    30

    30 31

    31 33

    33 3

    3 35

    3 35

    3 31

    6 30

    30

    5 4

    5 4

    6 4

    6 6

    =et the "eneral euation o a cubic euation is "iven b&:

     y=

    ax3

    +bx

    2

    +cx+

    d  - ;uation !

    Substitutin" or  x=24∧ y=30∈the above ;uation !

    24¿¿24¿¿

    a¿

      -;uation-1

    Substitutin" or  x=27∧ y=27∈the above ;uation !

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    27¿¿27¿¿

    a¿

      -;uation-

    Substitutin" or  x=31∧ y=33∈theabove ;uation !

    31¿¿31¿

    ¿a¿

      -;uation-3

    Substitutin" or  x=33∧ y=34∈the above ;uation !

    33¿¿33

    ¿¿

    a¿

      -;uation-

    by subtracting Equation1− Equation2  #e "et

    −5859a−153b−3c=3  

    by subtracting Equation2− Equation3  #e "et

    −10108a−232b−4c=−6  

    by subtracting Equation3− Equation4   #e "et

    −6146 a−128b−2c=−1  

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    by subtracting Equation1− Equation4  #e "et

    −22113a−513b−9 c=−4  

    a=−11189

    b=277

    54c=

    −268118

    d=10182

    7  

    d=1454.57  

    Dence the cubic euation

     y=−0.058201 x3+5.12963 x2−148.944 x+1454.57

    #hich matches the value in the "raph belo%

    !! !* !6 !( 30 3! 3* 360

    10

    !0

    30

    *0

    +., / - 005.3 2 *'3.! - 13(31. 2 136!)

    4 / 0'!

    Kua&a Lumpur

    Saturda

    Sunda

    o check more on the relationship bet%een the temperature or the da&s o Buala =umpur

     Mann-Whitney U test: is conducted to check %hether there is an& si"niicant dierence in

    their temperatures Same data rom Buala =umpur is taken to test this behavior

    =et the variables denote:

    U = Mann−Whitney U variable .  

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    n1=Sample¿ saturday .

     

    n2=Sample¿ sunday.

     

     Ri= Rank of the sample¿¿  

     H o=here is significant difference∈their temperatures.  

     H 1=here isno signifcant difference∈their temperatures .

     

      x=¿  Di"hest rank total

     !  x=¿  

    The formula for Mann-Whitney U test is

    U =n1

    n2+

    n2(n

    2+1)

    2− ∑

    i=n1+1

    n2

     Ri

    %"r the test 9rst ran;ed . and int" di va&ues "r the Mann-

    $hitne > test "r t="-tai&ed test at 5  &eve& " si7ni9cance &eve&

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    &ar7erran;

     #. 6!65

    N. !*

    U calculated=24"24+24"25

    2−626.5  

    U calculated=249.5  

    5 levelof significance

    U table value(24,24)=201¿

    U #alc

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

     H 1: &llthemeans are not equal .

     

    ?Sum o each entr& in the table

    ' xi(2=∑ of eachentry squares∈theentry.  

     M = !umber of columns.  

     ) = !umber of ro*s .  

    n=mk =columns"ro*s.  

    SS =∑ of the squares of the total.  

    SS+=∑of the squaresbet*eenthe days .  

    SSW =∑ of the squares*ithin the days .  

     MSS= Mean∑ of the squares.  

     % −ratio  

    df = ,egreesof freedom.  

    - =0.05=5 levelof significance.  

    K >

    L

    Saturda !' !' !6 !6 !6 !6 !6 !6 !6 !' !( 30 31 33 3* 3* 3* !6 !*

    Sunda !6 !6 !6 !6 !6 !6 !5 !5 !6 !' 30 31 33 3* 35 35 31 30 30

    M"nda !' !' !6 !6 !6 !6 !6 !6 !' !( 30 30 31 30 3! 31 !' !' !' #uesda !6 !6 !6 !6 !5 !5 !5 !5 !5 !' !) 31 3! 33 3* 33 3! 30 !)

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    L>

    MP

    $ednesda !' !' !' !6 !6 !6 !6 !6 !6 !( 30 31 33 3* 3* 30 !) !) !)

     #hursda !( !( !' !' !' !' !' !' !' !' !( 30 !( 30 31 3! 33 3! 31

    %rida !( !' !' !6 !6 !5 !5 !5 !6 !( 31 3! 33 3* 3* 3* 33 33 3!

    Saturda !) !) !( !( !( !' !' !' !6 !' !) 31 3! 33 33 3! !( !( !)

     

     #L?@% #A

    ?S>M@%SB>?

    S

    K >L

     L>

    MP>

    Saturda'!)

    '!)

    6'6

    6'6

    6'6

    6'6

    6'6

    6'6

    6'6

    '!)

    '(* )00 )61

    10()

    1156

    1156

    Sunda6'6

    6'6

    6'6

    6'6

    6'6

    6'6

    6!5

    6!5

    6'6

    '!)

    )00 )61

    10()

    1156

    1!!5

    1!!5

    M"nda'!)

    '!)

    6'6

    6'6

    6'6

    6'6

    6'6

    6'6

    '!)

    '(*

    )00 )00 )61 )00

    10!* )61

     #uesda6'6

    6'6

    6'6

    6'6

    6!5

    6!5

    6!5

    6!5

    6!5

    '!)

    (*1 )61

    10!*

    10()

    1156

    10()

    $ednesda

    '!)

    '!)

    '!)

    6'6

    6'6

    6'6

    6'6

    6'6

    6'6

    '(*

    )00 )61

    10()

    1156

    1156 )00

     #hursda

    '(

    *

    '(

    *

    '!

    )

    '!

    )

    '!

    )

    '!

    )

    '!

    )

    '!

    )

    '!

    )

    '!

    )

    '(

    * )00 '(* )00 )61

    10!

    *

    %rida'(*

    '!)

    '!)

    6'6

    6'6

    6!5

    6!5

    6!5

    6'6

    '(*

    )61

    10!*

    10()

    1156

    1156

    1156

    Saturda(*1

    (*1

    '(*

    '(*

    '(*

    '!)

    '!)

    '!)

    6'6

    '!)

    (*1 )61

    10!*

    10()

    10()

    10!*

     

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

    he table belo% denotes the number o ro%s and columns o the data above

     ! = M " )   

    SS =157082−5468"5468192=1358  

    SS+=(665 )2

    24+

    (691)2

    24+

    (661 )2

    24+

    (674)2

    24+

    (685)2

    24+

    (695 )2

    24+

    (708 )2

    24+

    (689 )2

    24+

    (5468 )2

    192=73.3  

    SSW =1358−73.3=1258  

    Source o variation SS

    MS

    S *atio

    (et%een Groups 2

    233333333

    3 105

    15005241

    3

    #ithin Groups

    1

    15333

    3 64

    otal

    14

    1

    135241666

    2

    degreesof freedom for *ithin groups= ! − ) =192−8=184  

     MSS for bet*een groups=73.33

    7=10.5

     

    Mathematics Studies SL-Ma !016

    M !*

    K (

    N1)!

    Source o

    variation

    e"rees o

    reedom >d@

    Sum o

    suares >SS@

    Mean o

    Suares

    >MSS@

    E-ratio

    (et%een

    temperaturesB   −¿ 1   SS+   SS+

    ( ) −1)

    SS+/( ) −1)

    SSW /( ! − ) )

    #ithin

    temperatures .   −¿ B    SSW    SSW 

    ( ! − ) )

    otal  .   −¿ 1   SS 

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    Candidate Name: Pranav, Kethavarapu CandidateNumber: 001350-0036

     MSS for *ithin groups=1284.583

    184=6.98

     

     % − Ratio=10.5

    6.98=1.500579213

     

    - =0.05/criticalregionis% 7,184

    >2.02 

     % calc=1.500579213