Jorja is investigating only the number of shoppers visiting the shop each month.
Comment on the appropriateness, for her investigation, of the type of diagram she has drawn.

A scatter diagram is used to investigate the relationship or correlation between two quantitative (numerical) variables. In this case, it shows the relationship between "Donations" and "Shoppers". However, Jorja's investigation is focused *only* on the number of shoppers each month. She is interested in how this single variable changes over time. Therefore, a scatter diagram is not appropriate. A more suitable diagram would be a time series graph (plotting the number of shoppers against the month) or a simple bar chart (with each bar representing a month).