Q:

# How do you calculae the mean absolute deviation?

A:

Find the mean absolute deviation by finding the sum of the absolute value of x minus mu, all divided by N. In this formula, mu is the mean, x is the value of the term and N is the total number of terms.

## Keep Learning

Credit: Michael Blann Stone Getty Images

1. Find the mean

For the given set of values, find the mean by summing all of the values together and dividing by the total number of terms. For example, a set with the three number 5, 7 and 3 has a mean of (5 + 7 + 3)/3 = 5. Set this value to the Greek letter mu.

2. Find the absolute value of x minus mu

Subtract each term in the series, represented by the variable x, by mu, the mean of all values in the series. Then, take the absolute value of that number. For example, in the set 5, 7 and 3 with a mean of 5, the absolute value of the terms are 0, 2 and 2 respectively.

3. Sum all values of the absolute value of x minus mu

After determining the absolute value of each term minus the mean, add all of the found values together.

4. Divide by N

Divide the sum of the absolute values by the total number of values in the series to find the mean absolute deviation.

Sources:

## Related Questions

• A: In math, the term "sum of a geometric series" describes the value when all of the terms in a geometric series are added together. The sum of the terms in a... Full Answer >
Filed Under:
• A: The Lewis dot structure for CH2N2, the chemical formula for diazomethane, can be written with a C in the center, with two separate lines connecting the C t... Full Answer >
Filed Under:
• A: The formula for a midpoint is the sum of x1 and x2 divided by two for the first coordinate and the sum of y1 and y2 divided by two for the second coordinat... Full Answer >
Filed Under:
• A: The sum of two cubes refers to a special factoring formula: a^3 + b^3 = (a + b)(a^2 - ab + b^2). The a^3 and b^3 are the two cubes being added. For example... Full Answer >
Filed Under:
PEOPLE SEARCH FOR