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)