2 de Kiem Tra Chuong III Dai so 7 co Ma Tran
Transcript of 2 de Kiem Tra Chuong III Dai so 7 co Ma Tran
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MA TRN KIM TRA MT TITNM HC 2011 - 2012
Mn: Ton i S C!"#n$ III%&': (T!)i $i*n: +, '!.(khng k thi gian giao )
C/'
TnC!3 4(ni dung,chng)
N!5n 6i7. T!n$ !i89
5n ;?i@9 .!n$ B6n$ D.En >F
Nhn bit cs cc gi tr, scc gi tr khc
nhau, tn stng ng
T! cd"u hi#u i$u
tra%& c b'ng tn s
a *+ b'ngtn s r-t ra
c nhn ./t*$ d"u hi#u
S cuS imT l %
,2,525%
11,2512,5%
11,515%
10,757,5%
G
0%
i89 01c sinh 2& c bi3u
4 5n th6ngS cuS imT l %
12
20%
12
20%
S .J9n$ 6n!=n$
Nhn bit c!t c7a d"u hi#u
8n d9ng c:ng thc t;nhc s trung bnh cng
S cuS imT l %
10,55 %
11,515%
22
20%
TLn$ > =9TLn$ > i8T l %
O!!0%
11,2512,5%
P550%
10,757,5%
1010100%
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KIM TRA MT TITNM HC 2011 - 2012
Mn: Ton i S C!"#n$ III%&': (T!)i $i*n: +, '!.(khng k thi gian giao )
1Qi 1:(< i3!)=t gi *i>n th3 d9c chi$u ca (t;nh th? c!) c7a !t nh@! h1c sinh na! *+ ghi 25i A b'ng sau B
CDE C
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c) T! s trung bnh cngId) ng bi3u 4 5n th6ng
HNU VWN CHXM CHYNH THZCKIM TRA 1 TIT - NM HC 2011 - 2012
[\ [N 1
i Ni ;9n$ i8
1 P
+
a)Mhi$u ca(.) CDE CDG Cu cha c9 th3 W8 ch nea s i3! &hn @ s & n[ 0L c@ th3 c@ nhfng nhn ./t khc kh:ng nh & n nhng *n -ng *Si b+i th W8 *n ch i3! ti a
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[ T;nh s trung bnh cng 0L c@ th3 trnh b+J dSi d5ng b'ng tn s d5ng d1c hc th? c:ng thc W8ch"! *n ch i3! ti a[ hi 0L dng bi3u 4 5n th6ngBj =Pi 5n th6ng 0L dng sai W8 tr` H,XFj Thiu k; hi#u tr9c gi tr (.) *+ tr9c tn s (n) W8 tr` H,XF2Pij Nu 0L chia cc n * d+i tr>n clng !t tr9c sai W* kh:ng ch i3! &hn bi3u 4
HNU VWN CHXM CHYNH THZCKIM TRA 1 TIT - NM HC 2011 - 2012
[\ [N 2
i Ni ;9n$ i81
+
a)L i3! (.) E G CHTn s ( n) C F F G N Y XH C,F
b) ^5 th7 K b]n t"t c' XH &ht s-ng H,Fc) L i3! th"& nh"t trng cc 2n b]n 2+ i3! H,Fd) M@ G 2n .5 th7 5t i3! CH H,F?) L cc gi tr khc nhau c7a d"u hi#u 2+ < H,F) Tn s i3! E 2+ F H,F
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a) "u hi#u 2+B \i3! ki3! tra h1c k !:n tn c7a t`ng h1c sinh 2S& Q=t c7a d"u hi#u 2+B =HY CH i3!
C,XFH,F
b)"#t $ nhn &'t[ M@ !t 0L 5t i3! ca nh"t 2+ CH(i3!) chi! t 2# ."& . D,C[ M@ hai 0L b i3! th"& nh"t 2+ X(i3!) chi! t 2# ."& . O,D[ hn :ng 0L 2+! b+i ki3! tra c O(i3!) c@ 0L chi! t 2# ."& . XC,G
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c) ( S t)ung *+nh c#ng ^ Y
2.2 4.5 5.4 6.7 7.6 8.5 9.2 10
32
+ + + + + + +Y
196
32Y O,CXF (i3!) C,F
d)
X
TLn$ 10
C! ]:
0
7
6
5
4
2
1
109876542 x
n
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i 1:Nu 0L n>u !t c7a d"u hi#u thiu n * tr` H,XFi 2:- ^c nh d"u hi#u nu 0L n>u cha c9 th3 W8 ch nea s i3! &hn @ s & n[ 0L c@ th3 c@ nhfng nhn ./t khc kh:ng nh & n nhng *n -ng *Si b+i th W8 *n ch i3! ti a[ T;nh s trung bnh cng 0L c@ th3 trnh b+J dSi d5ng b'ng tn s d5ng d1c hc th? c:ng thc W8ch"! *n ch i3! ti a[ hi 0L dng bi3u 4 5n th6ngBj =Pi 5n th6ng 0L dng sai W8 tr` H,XFj Thiu k; hi#u tr9c gi tr (.) *+ tr9c tn s (n) W8 tr` H,XF2Pij Nu 0L chia cc n * d+i tr>n clng !t tr9c sai W* kh:ng ch i3! &hn bi3u 4