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A detailed explanation of box plots, including their components and creation process. It also covers the interquartile range and outliers, their definitions, and impact on statistical analysis. Students will learn how to find the median, lower and upper quartiles, and draw a box plot using a given dataset.
What you will learn
Typology: Exercises
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Step 1: Order the numbers from smallest to largest
Median: 12
Median: lower^12 quartile:
upper quartile: 14
Now you are ready to construct the actual box & whisker plot. First you will need to draw an ordinary number line that extends far enough in both directions to include all the numbers in your data:
Locate the lower median 8.5 and the upper median 14 with similar vertical lines:
3 1 2 4 5 Name the parts of a Box-and-Whisker Plot Median Upper Quartile Lower Quartile Lower Extreme Upper Extreme
Ex 1: Ms. Gray is 25 years old. She took a class with students who were 55, 52, 59, 61, 63, and 58 years old. Find the mean and median with and without Ms. Gray’s age. mean ≈ 53.3 median = 58 mean = 58 median = 58. Data with Ms. Gray’s age : Data without Ms. Gray’s age : C. The Effect of Outliers