Technology Appendix - McGraw-Hill Ryerson
Technology Appendix - McGraw-Hill Ryerson
Technology Appendix - McGraw-Hill Ryerson
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Function or TaskShadeNorm functionShadeNorm(lowerbound,upperbound, mean,standard deviation)Keystroke(s), Menu, or ScreenThe ShadeNorm( function allows you to shade the areaunder the probability density graph that a given data point liesbetween lowerbound and upperbound using a normaldistribution with a given mean and standard deviation. Themean and standard deviation are optional. If they are notspecified, the mean is assumed to be zero, and the standarddeviation is assumed to be one.Example 1:An IQ test has a mean of 100 and a standard deviation of 10.You would like to display and shade the probability densityfunction that a given participant scored between 90 and 115.First, set up your Window like this:Press 2nd VARS to access DISTR.From the DRAW menu, select 1:ShadeNorm(.Type in 90,115,100,10) and press ENTER.Notice that the probability represented by the shaded area hasalso been displayed.Top MenuMHR • Mathematics of Data Management <strong>Appendix</strong> B (Revised 2010) Page 36 of 129
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