Question

• Arithmetic mean of 62.2, 66.5, 65.7,
70.9, 78.8, 66.5, 78.7, 20.1, 49.8 is
Answer
A. 62.3
م 4
62.4
C. 62.13
D. 78.8​

Answer 1

Answer:

the answer is 45.98

Explanation:

62.2+ 66.5+65.7+70.9+78.8+66.5+78.7+20.1+49.8= 413.9

413.9/9= 45.98

Answer 2

Given:

62.2, 66.5, 65.7, 70.9, 78.8, 66.5, 78.7, 20.1, 49.8

To find:

The arithmetic mean of the given numbers

Solution:

The arithmetic mean of 62.2, 66.5, 65.7, 70.9, 78.8, 66.5, 78.7, 20.1, 49.8 is 62.13. (Option C)

We can find the mean by following the steps given below-

We know that the arithmetic mean of the given terms can be calculated by dividing the sum of all terms by the number of terms given.

Arithmetic mean=Sum of all terms/ Total number of terms

The terms given are:

62.2, 66.5, 65.7, 70.9, 78.8, 66.5, 78.7, 20.1, 49.8

We will calculate the sum of all digits by adding them.

Sum of all terms=62.2+66.5+ 65.7+ 70.9+78.8+ 66.5+78.7+ 20.1+ 49.8

=559.2

Total number of terms=9

Using these values, we will obtain the arithmetic mean.

On putting the values, we get

Arithmetic mean=559.2/9

=5592/90

=62.13

Therefore, the arithmetic mean of 62.2, 66.5, 65.7, 70.9, 78.8, 66.5, 78.7, 20.1, 49.8 is 62.13.