The following table contains data on ear piercings and tattoos for a sample of 1375 college women. The earpierce response is the total number of ear piercings for a woman, and this has been categorized in the rows of the table.
a. For each ear-piercing category, determine the percentage with a tattoo. On the basis of these percentages, would you say there is a relationship between these two variables? Explain.
b. Draw a bar graph of the column percentages. What does the graph show us about the relationship between having a tattoo and the number of ear piercings?
c. Calculate the percentage with at least five ear piercings for women who have a tattoo and separately for women who don't have a tattoo.
d. What percentage of the total sample has a tattoo?
e. What percentage of the total have two or fewer ear piercings and also do not have a tattoo?