Answer:
scatter plot
Explanation:
Scatter plot -
It is the type of plot on any cartesian coordinate , where various points are plotted in two variables for the set of data , is referred to as a scatter plot.
The data of the particular experiment is plotted as the collection of dots , where it corresponds to two values , one in the horizontal axis and other in the vertical axis .
Hence , from the question ,
Kate can use the method of scatter plot , in order to plot the relation between sleep hours with grade point average.