Homework #7: Using the TI 83/84 to find the Mean and Standard Deviation

 

If you need the variance, the Variance is computed by squaring the standard

deviation from the calculator. 222 1.122765688 1.26060279X X

Please Note: On the next page the mean and standard deviation is computed by hand for Homework #7 through #13.

Probability plot using TI 83/84: Follow the steps for the boxplot in chapter 3 section 3.5.Stat, 1:Edit and then enter the data in L1 and L2.

2nd and Y to access the STATPLOT, Chose 1 for Plot 1, put cursor on “ON” and enter to turn on Plot 1, move arrow down and chose the first graph (newer calculators the graphs are in one row), then move the cursor to the XList: and do 2nd and 1 to choose L1, Freq: 1, Mark: chose a symbol to mark the probabilities, then hit Zoom and chose #9, the hit Trace to verify the probabilities.

Please follow the same instructions to get the mean, standard deviation, and probability plot on problems 8, 9, 10, 11, 12, and 13 using the calculator.