Question

exam scores (dot plot display shown). question 1: on the dot plot display, which category is least represented? options: a 20, b 30, c 40, d 50. question 2: on the dot plot display, which category is under - represented? options: a 15, b 25, c 35, d 45.

Explanation:

First Sub - Question: "On the dot - plot display, which category is least represented?"

A dot - plot uses dots to represent the frequency of data points in each category. To find the least represented category, we look at the number of dots (frequency) for each score category (20, 30, 40, 50). From the dot - plot (even though the plot is a bit unclear, typically in such problems, the category with the fewest dots is the least represented. Looking at the options, the dot for 50 (category D) is the least in number compared to 20, 30, and 40.

Similar to the first question, we analyze the frequency of dots for each category (15, 25, 35, 45). By observing the dot - plot, the category with the fewest dots (lowest frequency) among these is 45 (category D).

Answer:

D. 50

Second Sub - Question: "On the dot - plot display, which category is under - represented?"