QR.S.5
Read, interpret, and make decisions about data summarized numerically using measures of center and spread, in tables, and in graphical displays (line graphs, bar graphs, scatterplots, and histograms), e.g., explain why the mean may not represent a typical salary; explain the difference between bar graphs and histograms; critique a graphical display by recognizing that the choice of scale can distort information.
Example Problems
The frequency table shows the quiz scores of students:
Find the median quiz score.
| Quiz score | Number of students |
|---|---|
| 60 | 2 |
| 70 | 3 |
| 80 | 3 |
| 90 | 2 |
| 100 | 1 |
Find the median quiz score.
Joey examined the age of her cousins.
What is the mode of the age of her cousins?
| Name | Age (years) |
|---|---|
| Tommy | 6 |
| Margie | 5 |
| Sadie | 3 |
| Ben | 3 |
| Harriet | 8 |
| Isaiah | 3 |
What is the mode of the age of her cousins?
The frequency table shows the number of goals a team scored in each match:
Find the median number of goals scored.
| Goals scored | Number of matches |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 3 |
| 3 | 1 |
| 4 | 1 |
Find the median number of goals scored.
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