In order to study whether IQ level is related to birth order

In order to study whether IQ level is related to birth order, data were collected from a sample of 540 students on their birth order (Oldest/In Between/Youngest) and their score on an IQ test.

Which of the following would be a meaningful display of the data from this study?

A pie chart

A histogram

A scatterplot

A two-way table

Side-by-side boxplots

Solution

Since our aim is to study whether IQ level is related to birth order,

Pie chart is not good at it just gives you information about the portion that each will occupy.

HIstogram will give you how the data are distributed.

boxplot is more to decribe statistical properties such as mean and median.

two table is more to present information about situations

so, A scatterplot is best here as it will represnt where the most clusters of IQ scores are in different age group.