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5.3 Variability

Compare dinner costs using median and ranges in box plots for two restaurants. Analyze distributions and draw conclusions from the data shown. Evaluate median values and interquartile ranges for each restaurant. Discuss support for conclusions made and interpret dot plots on time spent at dinner.

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5.3 Variability

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  1. 5.3 Variability Common Core Investigation 5.3

  2. Objective Today I will summarize data using the median and ranges of a box-and-whisker plot.

  3. The box plot compares the dinner ticket amounts for the two restaurants How are the distributions the same and how are they different? Compare the distributions of the data shown in the box plot. What conclusions can you draw about the cost of dinner?

  4. The box plot compares the dinner ticket amounts for the two restaurants Find the median value and the interquartile range for each restaurant. What is the difference in the medians?

  5. The box plot compares the dinner ticket amounts for the two restaurants Do the results you found support the conclusions you made about the data? Explain why or why not.

  6. The dot plots show the lengths of time, to the nearest 10 minutes, some diners spent at dinner at each restaurant What comparisons can you draw from looking at the plots about the time diners spend having dinner at the restaurants? What is the difference in the median value for each set of data? For which set of data would you expect a greater interquartile range? Explain your answer.

  7. Text Messaging The dot plots show the numbers of texts, to the nearest 10, some students sent one week in the summer and one week during the school year. What comparisons can you draw from looking at the plots about the numbers of texts sent during each time of year?

  8. Text Messaging The dot plots show the numbers of texts, to the nearest 10, some students sent one week in the summer and one week during the school year. What is the difference in the median value for each set of data?

  9. Text Messaging The dot plots show the numbers of texts, to the nearest 10, some students sent one week in the summer and one week during the school year. For which set of data would you expect a greater interquartile range? Explain.

  10. Homework Yellow Packet Pg. 33: 19-23

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