Mean Absolute Deviation

Front

What is Mean Absolute Deviation (MAD)?

Back

MAD is a measure of the dispersion of a set of data points around their mean, calculated as the average of the absolute differences between each data point and the mean.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers in the data set and then divide by the total number of values.

Front

What is the formula for calculating Mean Absolute Deviation?

Back

MAD = (Σ |x_i - mean|) / N, where x_i represents each data point, mean is the average of the data set, and N is the number of data points.

Front

What does the absolute value of a number represent?

Back

The absolute value of a number is its distance from zero on the number line, always expressed as a positive value.

Front

If the data set is 6, 7, 2, 1, 5, 2, 1, 6, what is the mean?

Back

The mean is 3.8.

Front

Given the data set 85, 90, 68, 75, 79, what is the Mean Absolute Deviation?

Back

The MAD is 6.48.

Front

True or False: The absolute value of a number will always be positive.

Back

True.

Front

What is another term for 'average'?

Back

Mean.

Front

In the data set 11, 34, 16, 18, 22, 30, 18, 20, 15, 16, what is the Mean Absolute Deviation?

Back

The MAD is 5.2.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value when data is ordered, and mode is the most frequently occurring value.