An Instructor Divided Her Class into Four Groups and Asked $f$

Essay

An instructor divided her class into four groups and asked them to keep track of the number of soft drinks that they consume per week. In preparation for using the Kruskal-Wallis test to support or reject an hypothesis about the behavior of the different groups, combine and rank the following data. Find the sum of the ranks $f$ group.

$\begin{array}{l}\text { Soft Drinks Consumed per Week }\\\begin{array}{c|c|c|c}\text { Group A } & \text { Group B } & \text { Group C } & \text { Group D } \\\hline 7 & 4 & 2 & 3 \\10 & 20 & 5 & 9 \\14 & 6 & 13 & 16 \\12 & 11 & 15 & 17 \\8 & 9 & 10 & 18\end{array}\end{array}$