Question

Help! The line plot displays the number of roses purchased per day at a grocery store.

Line plot with a horizontal line across showing every number 1-10. Above the number one is two dots. Number 2 on the line plot has three dots above it. Number 3 has four dots above it. Above the number 4 is two dots. Number 5 has three dots above it. Every number 6-9 doesn’t have a dot. Finally, number 10 with one dot above it.

Which of the following is the best measure of variability for the data, and what is its values?

The IQR is the best measure of variability, and it equals 3.

The IQR is the best measure of variability, and it equals 9.

The range is the best measure of variability, and it equals 3.

The range is the best measure it variability, and it equals 9.

Answer 1

Answer: b! range and its 9

Explanation:

Answer 2

9

Explanation:

The line plot shows the frequency distribution of the number of roses purchased per day at a grocery store. The dots above each number on the line plot represent the number of days that the corresponding number of roses were purchased.

Since the line plot only displays discrete data, the best measure of variability would be the range, which is the difference between the maximum and minimum values. In this case, the maximum value is 10 (with one dot above it), and the minimum value is 1 (with two dots above it), so the range is 10 - 1 = 9.

Therefore, the correct answer is: The range is the best measure of variability, and it equals 9.