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The mean value of a set of values is equal to the ratio of the sum of the number of values in the set to the total number of values in the set.

The sum of a set of numbers is divided by the total number of values in the set to get the average. Let's say we're looking for the average of 24, 55, 17, 87, and 100. Simply add the numbers together: 24 + 55 + 17 + 87 + 100 = 283; then divide by 5 to get 56.6.

The average (arithmetic mean) of the parameters is returned. If the range A1:A20 contains numbers, the formula =AVERAGE(A1:A20) yields the average of the numbers in that range.

The number of rows is equal to the number of entries. As a result, the sum of the averages is the total of all the table entries divided by the number of rows. The total of all entries in the table divided by the number of rows equals the average of the row sums, so you should receive the same number either way.

The average is calculated by dividing the total of a collection of integers by the count, which is the number of values being added. Let's assume you're looking for the average of 13, 54, 88, 27, and 104. 13 + 54 + 88+ 27 + 104 = 286 is the total of the numbers. Because our data collection contains five values, divide 286 by 5 to get 57.2.

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