Concept explainers
To describe the center and spread of data and construct box-and-whisker plot
Answer to Problem 4CYU
Maximum=21
Minimum=6
Median=17
Lower quartile=10
Upper quartile=19
Explanation of Solution
Given information:
Data set: 20,18,15,17,18,,10,15,10,18,19,17,19,12,6,19,15,21,10,9,18
Formula used:
Lower quartile=
Median=
Upper quartile=
Where N is number of tiles/data points
Calculation:
Sorting data,
6,9,10,10,10,12,15,15,15,17,17,18,18,18,18,19,19,19,20,21
Maximum=21
Minimum=6
Substituting values,
Median
Lower quartile=
Removing .25,
Lower quartile=
Upper quartile=
Adding 0.25,
Upper quartile=
Graph:
Interpretation:
Data is negatively skewed.
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Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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