Consider the partial relative frequency distribution of consumer preferences for four products— W, X, Y, and Z— that is shown in the page margin.
a. Find the relative frequency for product X.
b. If 500 consumers were surveyed, give the frequency distribution for these data.
c. Construct a percent frequency bar chart for these data.
d. If we wish to depict these data using a pie chart, find how many degrees (out of 360) should be assigned to each of products W, X, Y, and Z. Then construct the pie chart.