Chapter 8) Statistics

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Q1. The numerical information collected for a specific purpose is called ............ .

A) raw numbers
B)raw data
C) score
D) raw table

Q2. In statistics, the 'average' is called the ............. .

A) mean
B) score
C) ferquency
D) sum cm

Q3. Number of persons in 10 family are as below, 2, 3, 3, 3, 4, 6, 3, 2, 3, 4. What is the frequency core 3?

A) 2
B) 5
C) 4
D) 3

Q4. The number of runs made by each player of a cricket team in a certain match are given as : 11, 17, 97, 50, 21, 43, 12, 0, 16, 12,7. What was this team's total score ?

A) 186
B)286
C) 276
D) 86

Q5. The square of the neagative number is always ............ number.

A) both positive and negative
B) decimal
C) negative
D) positive

Q6. If sum of all the observation is 72 of 9 observation, then the mean = ......

A) 7
B) 12
C) 8
D) 9

Q7. If Sachin obtained 12, 7, 16, 25 marks in four test's of Maths, what is the average of marks?

A)15
B)25
C)12
D)7

Q8. The ages (in years) of 10 children in a class are given below. 12, 12, 11, 14, 13, 12, 11, 11, 14, 11 How many children have age 11 ?

A) 2
B) 3
C) 5
D) 4

Q9. A person surveyed 10 families in a neighbourhood. The number of children in each family are as below 2,3, 0, 4, 1, 2, 3, 2, 1, 2 What is the lowest score in this data ?

A) 1
B) 1
C) 0
D) 4e

Q10. What is the average of the numbers 10, 20, 40 ?

A)35
B)30
C)32
D)40