Database Reference
In-Depth Information
In these cases, we should do our best to follow good statistical practices and randomize the
sample, and we should also present the results with confidence intervals included so our
audience isn't misled into thinking that they can conclude more than the data allows.
To illustrate the point, let's consider a fictional case of chess club participation rates of stu-
dents in ten different cities in the peaceful country of Chesslandia. The President of
Chesslandia, Garry Fischer, wanted to know whether students in his country were involved
in chess club or not, and which cities were more successful in getting students to participate.
He sent out his amateurs to ask a handful of students in each city whether they were in chess
club or not, and the spreadsheet they brought back to him is shown in
Figure 7-17
.
