Question

Calculate the average (arithmetic mean) for the data set ( rounded to the nearest tenth) {125, 123, 75, 55, 115, 118, 99, 108

Answer 1

The average (arithmetic mean) rounded to the nearest tenth, 102.3

Explanation:

Arithmetic Mean:- The arithmetic mean of a set of given data is found by taking the sum of the data, and dividing the sum with the total number of values.

Arithmetic Mean
`=(Sum of the data)/(Total number of values)`

Given: The data set: {125, 123, 75, 55, 115, 118, 99, 108}

The number of values is 8,

Sum of the data=125+123+75+55+115+118+99+108=818

Now, using above formula to find the arithmetic mean;

Arithmetic mean =
`(818)/(8) =102.25`

Therefore, the average (arithmetic mean) rounded to the nearest tenth, 102.3