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The given frequency distribution table shows the marks obtained by 32 students in a test.

Marks No. of Students

0-10 2

10-20 10

20-30 9

30-40 4

40-50 7


a. What is the class size?

b. What is the upper limit of the class interval 40-50?

c. What is the lower limit of the class interval 20-30?

d. What is the frequency of the class interval 10-20?



Answer :

The class size is 10.

The upper limit of the class interval 40 - 50 is 50/

The lower limit of the class interval 20 - 30 is 20.

The frequency of class interval 10 - 20 is 10.

What is the frequency distribution?

A class interval is a group of values that are put together for computation in a frequency distribution. An example of a class interval is 20 - 30. The class size is the difference between the upper limit and the lower limit of a class interval. The class size is the same for all the data set.

Class size = upper limit - lower limit

50 - 40 = 10

The upper limit is the biggest number in a class. The lower limit is the smallest number in a class. For example in the class 20 - 30, the  upper limit is 30 and the  lower limit is 20. The frequency of a distribution is the number of times that data within a class appears in the data set. For example, the class 40 -- 50 appears 7 times in the data set.

To learn more about class interval, please check: https://brainly.com/question/28021783

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