Range and outliers

Lessons

1. What is the range of each set of data?
   1. 3, 8, 6, 12, 10, 14, 9, 4
   2. -4, 3, -8, 9, 11, -11, 0
   3. 41, 23, 54, 21, 37, 33, 19, 22, 17
2. Kate was given a Nancy Drew mystery computer game for her birthday. The following times indicate how long it took her to complete the game the first 5 times she did it:
   
   10 hours, 6 hours, 5 hours, 3 hours, 2 hours
   1. What is the range?
   2. Which time may be an outlier?
   3. If the outlier is removed, what is the new range?
3. Four athletes completed a 50m freestyle race at a swim competition.
   • The fastest time was 28 seconds.
   • The mode was 31 seconds.
   • The mean was 30 seconds.
   
   1. What were the finishing times for the 4 athletes?
   2. What is the range of times?