Statistics's task 2
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STATISTICS
CREATED BY : DIAJENG PUTRI SUCIUTAMI NIDIYA DWIAHENDI DARYANA
WISI UNGGUL PERTIWI
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• Statistics is a study or scientific method of collecting,organizing,processing,presenting,analyzing,data and drawing a conclusion according to the result of data analysis.
• Collection of the data is the beginning stage in the statistical activity. Collecting data can be performed by interview of questionnaire,then continued by one of the following activities ,like counting,measuring,recording data by tallies.
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• QUANTITATIVE data are obtained from the result of numerical recording(in the form of figures)
• QUALITATIVE data are data related to the category of characteristics of an object.
TWO TIPES OF STATISTICA DATA
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• MEAN of data set is the sum of all data values divided by the number of data
• MODE is the value that occurs most frequently
• MEDIAN is a measure of central tendency used to analize data.
MEASURES OF CENTRAL TENDENCY
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We try survey in class VII A about what they are open, used, websites on the internet and how often they are opened internet and how many times they went to the Warnet.
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AND THE RESULT IS
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“HOW OFTEN YOU OPEN INTERNET IN A DAY?”
DATA TALLY FREQUENCY
X.F
1 IIII IIII IIII 15 15
2 IIII 5 10
3 IIII 4 12
5 II 2 10
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MEAN = SUM OF ALL VALUES NUMBER OF DATA
= 15+10+12+10 15+5+4+2 = 47 26 = 1.8MODE = 1MEDIAN = 26 2 = 13
MEAN,MODE,MEDIAN OF THE FIRST QUESTION
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Once58%Twice
19%
Three times15%
Four times8%
THE RESULT IN PIE CHART
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“HOW OFTEN DO YOU USE INTERNET A
DAY ?”
DATA TALLY FREQUENCY F.X
NEVER(1) IIII IIII 9 9SELDOM(2) IIII IIII IIII 15 30OFTEN(3) II 2 6
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MEAN = SUM OF ALL VALUES NUMBER OF DATA = 9+30+6 9+15+2 = 45 26 = 1.7MODE = SELDOM (2)MEDIAN = 22.5 +23.5 2 = 23 = 2
MEAN,MODE,MEDIA OF THE SECOND QUESTION
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Never64%
Seldom25%
Often11%
Sales
THE RESULT IN PIE CHART
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“WHAT YOU USED WHEN YOU OPEN THE INTERNET”
DATA TALLY FREQUENCY F.X
LAPTOP/COMPUTER(1)
IIII IIII IIII III 18 18HANDPHONE(2) IIII III 8 16
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MEAN = SUM OF ALL VALUES NUMBER OF DATA = 18+16 18+8 = 34 26 =1.3MODE = LAPTOP/COMPUTER(1)MEDIAN = 34 2 = 17 = 1
MEAN,MODE,MEDIAN,OF THE THIRD QUESTION
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Laptop/Computer
69%
Handphone31%
Sales
THE RESULT IN PIE CHART
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DATA TALLY FREQUENCY F.X
FACEBOOK(1) IIII IIII IIII IIII III 23 23
TWITTER(2) IIII IIII II 12 24
YOUTUBE(3) IIII IIII I 11 33
GAME ONLINE(4) IIII IIII IIII II 17 68
FOR HOMEWORK(5)
IIII IIII 9 45
SEARCH INFORMATION(6)
IIII IIII III 13 78
DETIK.COM(7) II 2 14
WHAT WEBSITE YOU OFTEN OPEN IF YOU USE INTERNET?”
WIKIPEDIA(8) II 2 16
YAHOO MESSANGER(9)
II 2 18
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MEAN = SUM OF ALL VALUES
NUMBER OF DATA
=23+24+33+68+45+78+14+16+18
23+12+11+17+9+13+2+2+2
= 319
91
= 3,5
MODE = FACEBOOK (1)
MEDIAN = 159,5+160,5
= 32O
= 320
2
=160
= 5
MEAN,MODE,MEDIAN OF THE FOURTH QUESTION
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Facebook25%
Twitter13%
Youtube12%
Game Online19%
For Homework10%
Search Infor-mation
14%
Detik.com2%
Wikipedia2%
Yahoo Messenger2%
THE RESULT IN PIE CHART
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“DO YOUR PARENTS KNOW IF YOU OFTEN OPEN INTERNET ?”
DATA TALLY FREQUENCY F.X
KNOW (1) IIII IIII IIII IIII IIII
25 25
DIDN’T KNOW(2)
I 1 2
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MEAN = SUM OF ALL VALUES NUMBER OF DATA = 25+2 26 = 1.04MODE = KNOW (1)MEDIAN = 27 2 = 13.5 Median = 1
MEAN,MODE,MEDIAN OF THE FIFTH QUESTION
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Know96%
Didn't Know4%
THE RESULT IN PIE CHART
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The Man Who Says He Never Has Time Is The Laziest Man.
(Lichtenberg)By learning to obey we know to
command.
THANKS FOR YOUR ATTENTION