Question

The class marks of a distribution are given below 8 14 20 26 32 38 44 50. find the class size and class interval.

Answer 1

Class size will be 6 and class interval will be 5.25

Step-by-step explanation:

We have given that data 8 14 20 26 32 38 44 50

Difference between two consecutive number is

14 - 8 = 6

20-14 = 6

26-20=6

32-26=6

38-32=6

44-38=6

50-44 =6

So class size will be 6 ( As the difference between two consecutive number is 6 )

Now range of the number = 50 - 8 = 42

Total number of data = 8

So class interval $=\frac{range}{total\ number\ of\ data}=\frac{42}{8}=5.25$

So class size will be 6 and class interval will be 5.25  

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Answer 2

Answer:

class size -6

class interval-5.25