Grade 7 - Data-Handling-Probability-Statistics

(Sample Printed worksheet)

Answer The Following

1)In an office, the age of the employees was as follows
35,41,28,48,46,45,42,31,26
What is the average of their ages?
2)Following table shows marks of 10 students in Science exam.
NameMarks (Out of 20)
Sarah4
Ronald14
Joseph4
Lisa6
Sandra17
Karen16
Donald20
Michelle15
Donna16
Elizabeth8

Find the mean value of marks.
3)John tosses a die and tosses a coin. What is the probability that the he gets a 1 on the die and a Head from the coin toss?
4)The table below shows the number of books read by five children in one month.
NameNumber of books
Edward14
Sandra16
Joseph23
Karen25
Kenneth12

What is the average number of books read by the children?
5)Donald is part of the school cricket team, and this year he has scored an average of 32 runs. He has played 6 innings so far, and his scores in 5 of them are
24,29,26,41,24
What was his score in the last innings?

Choose correct answer(s) from given choice

6)If a die is thrown, what is the probability of getting an even number?

a.  
4
6
 
b.  
5
6
 
c.  
1
2
 
d. 1
7)A group of students from a British school were selected for a study. The color of the eyes of the students were noted down as below
Color of EyesNumber of Students
grey 10
blue 9
green 8
brown 8
black 2

What is the probability that the color of a student chosen at random was grey?

a.  
1
37
 
b.  
10
27
 
c.  
10
37
 
d.  
5
27
 
8)If an event will occur with a probability of  
16
18
 , then we can say that it is:
a. will always occur b. cannot occur
c. less likely to occur d. likely to occur
9)There are 46 employees in a bank, who works in three shifts. The first group of 16 employees work from 9:00 AM to 11:00 AM. The second group of 11 employees work from 10:00 AM to 1:00 PM. And third group of 19 employees work from 11:00 AM to 1:00 PM. If there are only 5 computers, during what time, computers are likely to be used most ?
a. 10:00 AM to 1:00 PM b. 11:00 AM to 1:00 PM
c. 10:00 AM to 11:00 AM d. 9:00 AM to 11:00 AM

Fill in the blanks

10)Betty plays 11 games of golf, and scores the following
   72,70,70,73,85,85,71,89,88,88,78
The mean of her score is and the median is .

Answers

1) 38

2) 12

3)  
1
12
 

4) 18

5) 48

6) c.  
1
2
 

7) c.  
10
37
 

8) d. likely to occur
9) b. 11:00 AM to 1:00 PM
10)   
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