A researcher is interested in whether or not height is an advantage in sprint races with the hypothesis that taller people would have faster sprint times. They gather data on height measured in centimetres and time in a 100 meter sprint measured in seconds. If they want to describe this data with a graph, what would be the most appropriate plot?
A) A bar plot
B) A histogram
C) A scatterplot
D) A box plot

Question

Quizplus · Accepted Answer

A scatterplot is the most appropriate plot for comparing two continuous variables, such as height and sprint time. A bar plot would be appropriate if the researcher was interested in comparing the frequency of different height categories in the sample, but it does not show the relationship between height and sprint time. A histogram would be appropriate if the researcher was interested in exploring the distribution of sprint times or height in the sample, but it does not show the relationship between the two variables. A box plot would be appropriate for comparing the distribution of sprint times across different height categories, but it does not show the relationship between height and sprint time for each individual in the sample.

A Researcher Is Interested in Whether or Not Height Is