Mean Absolute Deviation Review

Front

What is Mean Absolute Deviation (MAD)?

Back

Mean Absolute Deviation (MAD) is the average of the absolute differences between each data point and the mean of the data set.

Front

How do you calculate the Mean Absolute Deviation?

Back

1. Find the mean of the data set. 2. Subtract the mean from each data point and take the absolute value. 3. Find the average of these absolute values.

Front

What does the symbol 'σ' represent in statistics?

Back

The symbol 'σ' represents the standard deviation of a population.

Front

What is variance?

Back

Variance is a measure of how much values in a data set differ from the mean of the data set.

Front

How is variance calculated?

Back

Variance is calculated by taking the average of the squared differences from the mean.

Front

What is the relationship between variance and standard deviation?

Back

Standard deviation is the square root of variance.

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What is the first step in calculating variance?

Back

The first step in calculating variance is to find the mean of the data set.

Front

Given the data set: 5, 10, 7, 12, 0, 20, 15, 22, 8, 2, what is the variance?

Back

The variance for the data set is 47.5.

Front

If the variance is 64, what is the standard deviation?

Back

The standard deviation is 8.

Front

What is the formula for calculating Mean Absolute Deviation?

Back

MAD = (|x1 - mean| + |x2 - mean| + ... + |xn - mean|) / n, where x is each data point and n is the number of data points.