AP Statistics : Graphing Data

Study concepts, example questions & explanations for AP Statistics

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Example Questions

Example Question #1 : How To Interpret Histograms

Louie collected the following data on sleeping habits of his classmates:

Sleep

Calculate the median, 1st and 3rd quartile (Q1 and Q3) and mode for the data. There are 19 students in the class.

Possible Answers:

Median:6     Q1:5       Q3:8        Mode:6

Median:7     Q1:6       Q3:9        Mode:8

Median:6     Q1:6       Q3:8        Mode:6

Median:7     Q1:6       Q3:8        Mode:6

Median:6     Q1:5       Q3:9        Mode:8

Correct answer:

Median:6     Q1:6       Q3:8        Mode:6

Explanation:

graphing the data, or counting the quarter and halfway points at 10, 15 and 5, results in Q1 and the median both being 6, while Q3 is 8. 6 is the most common value so it is the mode

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