## Mean absolute deviation anchor chart

Sal finds the mean absolute deviation of a data set that's given in a bar chart.

Step 3. Find the mean of those distances: Mean Deviation = 6 + 3 + 3 + 2 + 1 + 2 + 6 + 78 = 308 = 3.75 . So, the mean = 9, and the mean deviation = 3.75 Calculate the absolute deviation from the mean by taking the mean average, 6, and finding the difference between the mean average and the sample. This number is always stated as a positive number. For example, the first sample, 2, has an absolute deviation of 4, which is its difference from the mean average of 6. Mean Absolute Deviation In statistics, the mean absolute deviation is the mean of the absolute deviations of a set of data about the data’s mean. The mean absolute deviation is also called the mean deviation. The mean absolute deviation has a few applications. The first application is that this statistic may be used to teach some of the ideas behind the standard deviation. The mean absolute deviation about the mean is much easier to calculate than the standard deviation. A website captures information about each customer's order. The total dollar amounts of the last 8 orders are listed in the table below. What is the mean absolute deviation of the data? To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the It is also termed as mean deviation or average absolute deviation. It can be calculated by finding the mean of the values first and then find the difference between each value and the mean. Take the absolute value of each difference and find the mean of the difference, which is termed as MAD.

## The mean absolute deviation has a few applications. The first application is that this statistic may be used to teach some of the ideas behind the standard deviation. The mean absolute deviation about the mean is much easier to calculate than the standard deviation.

Step 3. Find the mean of those distances: Mean Deviation = 6 + 3 + 3 + 2 + 1 + 2 + 6 + 78 = 308 = 3.75 . So, the mean = 9, and the mean deviation = 3.75 Calculate the absolute deviation from the mean by taking the mean average, 6, and finding the difference between the mean average and the sample. This number is always stated as a positive number. For example, the first sample, 2, has an absolute deviation of 4, which is its difference from the mean average of 6. Mean Absolute Deviation In statistics, the mean absolute deviation is the mean of the absolute deviations of a set of data about the data’s mean. The mean absolute deviation is also called the mean deviation. The mean absolute deviation has a few applications. The first application is that this statistic may be used to teach some of the ideas behind the standard deviation. The mean absolute deviation about the mean is much easier to calculate than the standard deviation.

### 20. Calculate the mean absolute deviation both with and without the data value of 55. Round to the nearest hundredth if necessary. 21. Explain how including the value of 55 affects the mean absolute deviation. 22.Explain why the mean absolute deviation is calculated using REASONING absolute value.

Sal finds the mean absolute deviation of a data set that's given in a bar chart. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Step 3. Find the mean of those distances: Mean Deviation = 6 + 3 + 3 + 2 + 1 + 2 + 6 + 78 = 308 = 3.75 . So, the mean = 9, and the mean deviation = 3.75 Calculate the absolute deviation from the mean by taking the mean average, 6, and finding the difference between the mean average and the sample. This number is always stated as a positive number. For example, the first sample, 2, has an absolute deviation of 4, which is its difference from the mean average of 6.