Write the three methods of finding mean/arithmetic mean/average with the
description of the variables in the formulae.
pls ans fast
Answers
In working with an average, there is one central formula that is used to answer questions pertaining to an average. This formula can be manipulated in many different ways, enabling test writers to create different iterations on mean problems.
The following is the formal mathematical formula for the arithmetic mean (a fancy name for the average).
mean formula
A = average (or arithmetic mean)
n = the number of terms (e.g., the number of items or numbers being averaged)
x1 = the value of each individual item in the list of numbers being averaged
The following is the formula for the arithmetic mean, stated in a more readable and understandable form.
mean formula
A = average (or arithmetic mean)
N = the number of terms (e.g., the number of items or numbers being averaged)
S = the sum of the numbers in the set of interest (e.g., the sum of the numbers being averaged)
One common trap that some students fall into is they automatically divide by 2. However, dividing the sum of numbers by 2 is only correct when there are two terms. When there are more than two terms that are being averaged, dividing by two will give the wrong answer.
Answer:
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