Question

find the mean of the following distribution class interval 0 - 6 - 12 12 - 18 18 - 24 24 - 30 frequency 54164 ​

Answer 1

so these is your answer

Answer 2

The mean of the following distribution = 15

Step-by-step explanation:

To find, the mean of the following distribution = ?

The given table:

Class interval:   0 -6       6 - 12     12 - 18     18 - 24     24 - 30  

Frequency(f):     5             4           1              6              4              Σf = 20    

Mid-value (x):    3            9           15            21             27

fx:                       15         36          15           126           108            Σfx = 300  

We know that,

Mean = (Σfx)/(Σf )

=  $\dfrac{300}{20}$

= 15

∴ The mean of the following distribution = 15