It is: 5+4 = 9
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Sum is the same as add (an addition). For example, 5 + 4 = 9 is the sum of 5 and 4.
The sum in math is the answer of a question that involves addition. For example, the sum of '5 + 2' is '7'.
2n + (-5)
The arithmetic mean of a set of numbers are the sum of the numbers in the set, divided by the amount of numbers in the set. If the numbers in a set were to be 1, 2, 3, 4, and 5, the sum would be 1+2+3+4+5=15/5=3.
Add all the data together and then divide the sum by the number of data points. For example, 3, 4, 5, 6, 7 Sum is 25 There are 5 numbers or data points which combined to make that sum The mean or arithmetic average is 25/5 = 5