This lesson on descriptive statistics highlights various measures of location and spread such as mean, median, mode, range, variance, and standard deviation. A multiple choice test is given at the...
This tutorial opens with a survey on polling. Upon completing the survey, students are taken through an election example which uses polling to explain random sampling, bias, margin of error, and...
CAST contains three complete introductory statistics courses, one advanced statistical methods course, and additional modules. Each introductory course presents the same topics, but with different...
This humerous article explains Simpson's Paradox with an example on the treatment of Grott's Disease.
This applet allows students to manipulate a regression line to obtain the least squares regression line. The square distance from each point to the line and the sum of squares is shown by different...
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