Lesson Topic The Mean Absolute Deviation MAD Lesson Objective I can I can calculate the mean absolute deviation MAD for a given data set I can interpret the MAD as the average distances of data values from the mean ID: 771230
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Lesson Topic: The Mean Absolute Deviation (MAD) Lesson Objective: I can… I can calculate the mean absolute deviation (MAD) for a given data set. I can interpret the MAD as the average distances of data values from the mean.
Review What is variability? What does a distribution that has no variability look like? Little?A lot? The spread of data from the mean All data points are the same The data points are clustered The data points are spread far apart
Review In lesson 8, we used dot plots to visually order several data sets from the one with least variability to the one with most variability. When are deviations negative? When are deviations positive? When they are located to the left of the mean. When they are located to the right of the mean.
Mean Absolute Deviation (MAD) The sum of the absolute values of the deviations (absolute deviations) divided by the number of deviations Essentially, we are finding the mean of the absolute deviations in the distribution Is a measure of the amount of variability in a data distributionCalculate to the nearest tenth
Mean Absolute Deviation (MAD) Tells us the average distance that all the data values are from the mean. A small MAD indicates that the distribution has very little variability. A large MAD indicates that the data points are spread far away from the mean.