The following line plot shows the pulse rates of runners after finishing a marathon:

Title: "Pulse Rates of Marathon Runners"

- Pulse rate on the x-axis
- Number of runners on the y-axis

- 1 dot over 145
- 5 dots over 165
- 6 dots over 175
- 1 dot over 185

Which of the following data sets is represented in the line plot?

A. {145, 165, 175, 185}
B. {145, 150, 150, 152, 153, 160, 163, 165, 170, 170, 178, 179, 185}
C. {1, 5, 6, 1}
D. {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}

The line plot titled 'Pulse Rates of Marathon Runners' is accurately represented by the data set in option d: {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}. The number of occurrences of each pulse rate matches the number of dots over each rate in the plot.

Explanation:

The question asks for the dataset represented in the line plot titled Pulse Rates of Marathon Runners. This plot represents the pulse rates of various runners with the number of dots on each specific rate indicating how many runners had that pulse rate.

The correct dataset is option d: {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}. This is because there is 1 dot over 145, 5 dots over 165, 6 dots over 175, and 1 dot over 185, which corresponds to the numbers in this data set.

The other data sets are not an accurate representation of the line plot. For instance, option a only includes one of each pulse rate, option b has a spread of values not represented in the plot, and option c represents the number of runners at each pulse rate, not the actual pulse rates themselves.

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