Question

The class size of the class interval 20-30, 30-40, 40-50 is​

Answer 1

Answer:

answer is 10

Step-by-step explanation:

because there is a common difference between class interval of 10

Answer 2

The class size of the class interval 20 - 30 , 30 - 40 , 40 - 50 is 10

Given :

The class interval 20 - 30 , 30 - 40 , 40 - 50

To find :

The class size of the class interval

Concept :

Class Size

Class Length or Class Size or Class Width of the class interval of any class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.

Class Size = Upper Class boundary - Lower class boundary

Solution :

Step 1 of 2 :

Write down the given Class Size

Here it is given that class interval is 20 - 30 , 30 - 40 , 40 - 50

Step 2 of 2 :

Find Class Size

For class interval 20 - 30

Upper Class boundary = 30

Lower class boundary = 20

Hence the required Class Size

= Upper Class boundary - Lower class boundary

= 30 - 20

= 10

Similarly for the class intervals 30 - 40 , 40 - 50 class size is 10

Hence class size of the class interval 20 - 30 , 30 - 40 , 40 - 50 is 10

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