NOTES & Practice: Box & Whisker Plots Name What is Statistics? My Thoughts Class Thoughts Box and Whiskers Plot A box-and-whisker plot is a diagram that divides data into ____ equal parts(25%). To do this, first find the ___________ of the data, and then find the ____________ of the lower half, called the ___________ quartile, and the median of the upper half, called the __________ quartile. Median of an even number of data points: 76, 80, 91, 75, 76, 100 Median of an odd number of data points: 2.1, 3.0, 4.5, 4.9, 2.5 What is an outlier? Example 1: Data Set: Math test scores {80, 75, 90, 95, 65, 65, 80, 85, 70, 100} Reorder the data from least to greatest. Find the median, lower quartile (LQ), upper quartile (UQ), lower extreme, and upper extreme. Plot these points on a number line: Draw a box around the lower and upper quartiles. Draw a line through the median point. Draw the whiskers from each end of the box to the lower and upper extremes.
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NOTES & Practice: Box & Whisker Plots Name
What is Statistics?
My Thoughts Class Thoughts
Box and Whiskers Plot
A box-and-whisker plot is a diagram that divides data into ____ equal parts(25%). To do this,
first find the ___________ of the data, and then find the ____________ of the lower half, called
the ___________ quartile, and the median of the upper half, called the __________ quartile.
Median of an even number of data points: 76, 80, 91, 75, 76, 100
Median of an odd number of data points: 2.1, 3.0, 4.5, 4.9, 2.5
What is an outlier?
Example 1: Data Set: Math test scores {80, 75, 90, 95, 65, 65, 80, 85, 70, 100}
Reorder the data from least to greatest.
Find the median, lower quartile (LQ), upper quartile (UQ), lower extreme, and upper extreme.
Plot these points on a number line:
Draw a box around the lower and upper quartiles. Draw a line through the median point. Draw the whiskers from each end of the box to the lower and upper extremes.