Question

Using the following intervals for the scores on a 30-point quiz, how many x's would fall

over the interval of 19-21 on a line plot?
Scores: 21, 27, 20, 29, 23, 21, 21, 27, 26, 25
Intervals: 19-21, 22-24, 25-27, and 28-30
A. 4
B. 2
C. 3
D. 1

Answer 1

A total of 4 scores fall within the interval of 19-21 on the line plot, which includes the scores of 21, 20, 21, and another 21.

Step-by-step explanation:

To find out how many x's would fall over the interval of 19-21 on a line plot, we need to look at the scores given: 21, 27, 20, 29, 23, 21, 21, 27, 26, and 25. According to the intervals provided, we are focusing only on the scores that are between 19 and 21, inclusive.

Looking at the scores, we can see that 21, 20, and 21 fall within the 19-21 range. There is another 21, which also falls in this range. Therefore, we count a total of 4 scores that are within the 19-21 interval.

The correct answer to how many x's would fall over the interval of 19-21 on a line plot is 4 (Answer A).