Mean Absolute Deviation

Mean Absolute Deviation

Read each slide, and answer the questions. This is an easy grade. Also something to note is since spring break starts next week, on the last slide you will vote to a question.

Mean Absolute Deviation

• The mean absolute deviation is on average how far away the numbers in a data set are from the mean.

• To find it, first find the mean. Next calculate the absolute value of the difference (or the distance) between each data value and the mean. Remember the absolute value is the distance between that number and 0. Finally, find the mean of each of these differences.  

  
  

  
  

Multiple Choice

Find the Mean Absolute Deviation of the following data set (5,7,3,1,13). I have done the first step for you, the mean is 5.8. Do the rest of the steps. You have 5 minutes.

• 3.93

• 2.63

• 3.36

• 4.63

Open Ended

Find the mean absolute deviation of the following data set. (27,33,11,3,19) You have 3 minutes.

Open Ended

Explain what the mean absolute deviation is in your own words. You have 2 minutes.

Poll

Spring Break Starts next week. Would your rather me give you work during spring break so I can finish assigning work by April 1st, or after spring break is over I extend the last day 10 more days. You have 45 seconds to answer.

• Extend it 10 more days

• Assign work during spring break so we can finish on time.