Texas Instruments TINSPIRE Teacher Software Guidebook - Page 674

d) Deactivate the math expression box using Actions > Deactivate. The deactivation will prevent the content of that math box from being overwritten when the values for num and sampmeans change. The deactivated math box will be shown with the light color background. 3. Set up Data & Statistics for the sampling. a) Change the page layout and insert Data & Statistics. b) Click on the horizontal axis and add sampmeans list. c) Change the window setting: XMins=1 and XMax = 50. d) You can also set up the plot of the mean of sample means using Analyze > Plot Value. 4. Enter the instructions to add data. a) Type "Create new samples:" b) Insert a math expression to define the sample (sample) and update the number of samples and the list of sample means. Type: "num:=num+1:sample:=randsamp(population,size): sampmeans:=augment(sampmeans,{mean(sample)})" c) Press ·, hide the output, and turn off the expression wrapping using the Math Expression Box Attributes dialog box. d) Deactivate the math expression box using Actions > Deactivate to prevent the content of the math box to be overwritten when num and sampmeans values are reinitialized. 662 Using Notes