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BASIC STATISTICS

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1

A frequency polygon is drawn by joining the midpoints of the tops of the bars of a:

2

What type of graph is a frequency polygon?

3

The average of scores 60, 70, 80, 90, 100 is:

4

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

5

A bag contains 3 red balls and 5 blue balls. What is the probability of drawing a red ball?

6

What is the class midpoint of the interval 20-30?

7

Which graph is used to display the cumulative frequency distribution?

8

In probability, the sum of the probabilities of all possible outcomes is:

9

The weights (in kg) of 5 students are 45, 50, 55, 60, 65. What is the mean weight?

10

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

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