Probability and Statistics, Box-and-Whisker plot, Math worksheet for Grade 8 at myTestBook.com

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Question 1
Calculate Median for the following data. 4, 22, 9, 10, 11, 13, 15, 17, 8, 7, 19, 7, 11, 25, 3, 27 and 15.
A.	7.5	B.	11
C.	18	D.	12

Question 2
Calculate First Quartile for the following data. 4, 22, 9, 10, 11, 13, 15, 17, 8, 7, 19, 7, 11, 25, 3, 27 and 15.
A.	7.5	B.	11
C.	18	D.	8

Question 3
Calculate Upper Quartile for the following data. 4, 22, 9, 10, 11, 13, 15, 17, 8, 7, 19, 7, 11, 25, 3, 27 and 15.
A.	7.5	B.	11
C.	18	D.	20

Question 4
Calculate Range for the following data. 4, 22, 9, 10, 11, 13, 15, 17, 8, 7, 19, 7, 11, 25, 3, 27 and 15.
A.	0 − 27	B.	7.5 − 18
C.	27	D.	3 − 27

Question 5
The numbers of days taken off by 11 employees in a company are 30, 38, 27, 22, 42, 33, 40, 30, 43, 34 and 40. Find the lower, middle and upper quartile of the data.
A.	27, 34 and 40	B.	30, 33 and 40
C.	30, 34 and 40	D.	30, 34 and 38

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Question 6
Which grade has the largest range?
A.	Grade 7	B.	Grade 8
C.	Grade 9	D.	Grade 10

Question 7
Which grade has the highest median score?
A.	Grade 7	B.	Grade 8
C.	Grade 9	D.	Grade 10

Question 8
What is the lower quartile score for Grade 8?
A.	45	B.	70
C.	78	D.	91

Question 9
In which grade one or more student(s) scored 100?
A.	Grade 7 and Grade 8	B.	Grade 7 and Grade 9
C.	Grade 8	D.	Grade 7

Question 10
What is the approximate difference between upper quartile and lower quartile for grade 8?
A.	10	B.	20
C.	70	D.	90

Question No Answer
1 B
2 A
3 C
4 D
5 C
6 A
7 C
8 B
9 A
10 B

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