Question

Give basic formula to calculate arithmetic mean

Answer 1

Answer:

summer of all observation divided by no of observation

Answer 2

Answer:

$Arithmetic-mean = \frac{sum -of-data}{total-no. of-data}$

Explanation:

As we can take example,

We have been provided the data: 4, 5, 4, 7, 9, 6 and 8

Total number of data = 7

As we know that arithmetic mean is defined as the ratio of the sum of data to the total number of data

That is,

$Arithmetic-mean = \frac{sum -of-data}{total-no. of-data}\\ Arithmetic-mean= \frac{4+5+4+7+9+6+7}{7} \\ Arithmetic-mean= \frac{42}{7} \\\\ Arithmetic-mean=6$

Therefore,

∴ Arithmetic mean = 6

Hence, the required arithmetic mean = 6