Question

Find the mean of the following distribution: Class Interval: 0-6 6-12 12-18 18-24 24-30 Frequency: 5 4 1 6 4

Answer 1

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Hyy Dude

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 )

=  $\frac{300}{20}$

= 15

∴ The mean of the following distribution = 15

Hope it's helps you ☺️

Answer 2

Step-by-step explanation: the class mark x came by

adding lower limit and upper limit and than dividing it by 2

x=lower limit+upper limit/2

hopes this answer helps you