Question

Match the frequencies with their class interval for the given data:
{3, 1, 4, 2, 4, 7, 9, 10, 12, 14, 14, 17}

• A. 1
• B. 2
• C. 4
• D. 5

Answer 1

To make our job easy at first we can arrange the data in ascending order. {1, 2, 3, 4, 4, 7, 9, 10, 12, 14, 14, 17}.

We know that frequency gives the number of times a particular entry occurs.

In this data set:
Greater than or equal to 0 and less than 5, we have 5 observations.
Greater than or equal to 5 and less than 10, we have 2 observations.
Greater than or equal to 10 and less than 15, we have 4 observations.
Greater than or equal to 15 and less than 20, we have 1 observation.