Question

The marks obtained by 20 students in mathematics are as follows:
13, 19, 15, 24, 5, 18, 8, 12, 16, 12, 8, 23, 17, 20, 24, 21, 18, 13, 7, 10.
The data is divided into 5 groups namely 0 - 5, 5 - 10, 10 - 15, 15 - 20 , 20 -
25.
What is the frequency of the class 15 - 20?



pls explain..

Answer 1

between 15 to 20 there are 6 observations as

there is 20 in two classes that is 15 to 20 and 20 25 respectively we should take it in the bigger class

so therefore the frequency of class 15 to 20 6

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