Mean and Mean Absolute Deviation

The video tutorial explains how to calculate the mean absolute deviation of a data set. It begins by finding the mean of the data set, then compares each data point to the mean to determine the differences. These differences are summed up, and the total is divided by the number of data points to find the mean absolute deviation.

What is the first step in finding the mean absolute deviation?

• Identify the mode of the data set.

• Find the range of the data set.

• Add all the data points together.

• Calculate the median of the data set.

How do you find the mean of a data set?

• Multiply all data points and divide by the number of points.

• Add all data points and divide by the number of points.

• Subtract the smallest data point from the largest.

• Count the number of data points.

What is the mean of the given data set?

• 13

• 12

• 11

• 10

What is the next step after finding the mean in calculating the mean absolute deviation?

• Find the median of the data set.

• Calculate the differences between each data point and the mean.

• Identify the mode of the data set.

• Sum all the data points again.

What is the difference between the data point 9 and the mean 11?

• 1

• 2

• 3

• 4

After summing the differences, what is the next step in finding the mean absolute deviation?

• Multiply the sum by the number of data points.

• Divide the sum by the number of data points.

• Subtract the sum from the largest data point.

• Add the sum to the mean.

What is the mean absolute deviation of the data set?

• 6

• 5

• 4

• 3