Four Sections of an Introductory Psychology Course Took the Same

Essay

Four sections of an introductory psychology course took the same 50-point exam. The means for the four sections and the number of students in each section follow: $\begin{array}{ccc}\text { Section } & \bar{X} & \mathrm{~N} \\\hline \text { A } & 32.61 & 25 \\\text { B } & 30.29 & 43 \\\text { C } & 29.50 & 32 \\\text { D } & 27.06 &\underline{ 39}\\&&139\end{array}$ What is the weighted mean for students in introductory psychology?