BASIC STATISTICS

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1. What is the median of: 3, 5, 7, 9, 11, 13?

A 7

B 8

C 9

D 10

2. Find the median of the data: 12, 15, 18, 22, 25, 30.

A 20

B 18.5

C 22

D 19

3. What is the mean of the data set: 4, 8, 6, 5, 3?

A 4.8

B 5.0

C 5.2

D 6.0

4. The median of an even number of observations is:

A The average of the two middle values

B The middle value

C The most frequent value

D The sum of all values divided by count

5. If the mean of six numbers is 10, and one number is removed, the mean of remaining five is 9. What is the removed number?

A 10

B 12

C 15

D 18

6. In a histogram, the area of each rectangle is proportional to:

A The frequency of the class

B The class width

C The class midpoint

D The cumulative frequency

7. Which graph is used to display the cumulative frequency distribution?

A Ogive

B Histogram

C Frequency polygon

D Bar chart

8. Find the median of: 14, 16, 18, 20, 22, 24.

A 18

B 19

C 20

D 21

9. In a frequency distribution, the difference between upper and lower class boundaries is the:

A Class size

B Class mark

C Class limit

D Frequency

10. A histogram is used to display:

A Categorical data

B Continuous data

C Discrete data only

D Univariate data only

BASIC STATISTICS

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