2 de Kiem Tra Chuong III Dai so 7 co Ma Tran

7/25/2019 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%


2/5

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


4/5

[ 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

X

O

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

H,XFH,XFH,XF

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


5/5

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

2 de Kiem Tra Chuong III Dai so 7 co Ma Tran

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