Question

If the observations are 20 and -20 their arithmetic mean is what

Answer 1

Answer:

mean=20-20/2

mean=0/2

mean=0

Answer 2

Answer:

0

Explanation:

The arithmetic mean is also known as the mean or arithmetic average. It is calculated by adding all of the numbers in a given data set and then dividing the total number of items in that set by the total number of items in that set. For evenly distributed numbers, the arithmetic mean (AM) is equal to the middle number. Furthermore, the AM is calculated using a variety of methods that are based on the amount of data and the distribution of the data.

Let's look at an example where arithmetic mean is used. Because 6 + 8 + 10 = 24 and 24 divided by 3 [there are three numbers] equals 8, the mean of the numbers 6, 8, 10 is 8.

The general formula to find the arithmetic mean of a given data is:

Mean (x̄) =  $\frac{Sum of all observations}{Number of observations}$

keeping the above in mind the given question is solved:

20+(-20) = 0

0 is divided by 2 ( there are 2 numbers)

the mean of the numbers 20, -20 is 0

#SPJ2