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:

Quiz scoreNumber of students
602
703
803
902
1001


Find the
median quiz score.
Joey examined the age of her cousins.
NameAge (years)
Tommy6
Margie5
Sadie3
Ben3
Harriet8
Isaiah3


What is the
mode of the age of her cousins?
The frequency table shows the number of goals a team scored in each match:

Goals scoredNumber of matches
02
14
23
31
41


Find the
median number of goals scored.
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