Question

Calculate arthmetic mean from the following data: X: 4 5 6 7 8 frequency: 12 10 18 20 24​

Answer 1

explanation:

Arithmetic mean calculations are based on all the observations.

Answer 2

Answer:

Explanation:

Given

$X 4,5,6,7,8\\F 12,10,18,20,24$

The given series is a discrete series

We can find the value of arithmetic mean by using the following formula

$\sum(\frac{fx}{f} )$

$fx= 4\times12+ 5\times10+6\times18+7\times20+8\times24\\\\\sumfx = 48+50+108+140+192\\\\\sumfx =538$

sum of $f=12+10+18+20+24=84$

Mean= $\frac{538}{84} =6.40$