Next time you see an elderly man, check out his nose and ears! While most parts of the human body stop growing as we reach adulthood, studies show that noses and ears continue to grow larger throughout our lifetime. In one study examining noses, researchers report “Age significantly influenced all analyzed measurements:” including volume, surface area, height, and width of noses. The sex of the 859 participants in the study was also recorded, and the study reports that “male increments in nasal dimensions were larger than female ones.”

(a) How many variables are mentioned in this description? 

(b) How many of the variables are categorical? How many are quantitative? 

(c) If we create a dataset of the information with cases as rows and variables as columns, how many rows and how many columns would the dataset have?