Post on 03-Jan-2016
Quiz Time!• When you are finished, get your homework out and see
what questions you would like to ask or can finish on your own before we get started!
Homework Questions
NORMAL PROBABILITY PLOTS
Finish up Section 2.2
Is this Normal?• Look at unemployment rates in the 50 states in Nov 2009.
• How do we check to see if this is Normal?
4.1 4.5 5.0 6.3 6.3 6.4 6.4 6.6 6.7 6.7
6.7 6.9 7.0 7.0 7.2 7.4 7.4 7.8 8.0 8.2
8.2 8.4 8.5 8.5 8.6 8.7 8.8 8.9 9.1 9.2
9.5 9.6 9.6 9.7 10.2 10.3 10.5 10.6 10.6 10.8
10.9 11.1 11.5 12.3 12.3 12.3 12.7 14.7
Plot the data 1st!
68-95-99.7 Rule
Normal Probability Plots• Put the data in L1 in your calculator!• Turn on your StatPlot and choose the last graph option. It
looks like a line…after the boxplots…• Zoom 9
• If the plot looks like a straight line – it is NORMAL!• Don’t overreact to minor wiggles…
Homework• Pg 132 (55-58, 60, 63, 65, 66)