Summarizing the Spread of Data: Range and Mean Absolute Deviation

This lesson teaches how to summarize data spread using range and mean absolute deviation (MAD). It explains how to read a line plot, calculate the range by subtracting the smallest number from the largest, and find the mean absolute deviation by measuring the average distance of data points from the mean. The lesson highlights the difference between mean and MAD, emphasizing that both are measures of data spread. A comparison of range and MAD is provided, showing how they indicate data closeness. The lesson concludes with a summary of these concepts.

Explain how the range and mean absolute deviation can provide insights about the spread of data.

What would happen to the range and mean absolute deviation if all responses were identical?