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Not sure about a whisker plot, but a box and whisker plot is a representation of statistical data for one variable (at a time).
It consists of a rectangular shape, the "box", plotted against a horizontal value axis. The left side of the box is the lower quartile of the data and the right side is the upper quartile. The median divides the box.
Extending out from both sides of the box are lines, the "whiskers", that reach to the minimum and maximum values.
So, a box and whisker plot is defined by
- minumum,
- lower quartile (Q1),
- median (Q2),
- upper quartile (Q3), and
- maximum.
If there are outliers, they are usually excluded from the box and whiskers plot and are marked up separately as crosses.
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What type of graph is best for revealing the upper and lower quartiles of a set of data?
box-and-whisker plot
Why do you multiply by 1.5 in a box and whiskers plot?
When John Turkey was inventing the box-and-whisker plot in 1977 to display these values, he picked 1.5*IQR (inter-quartile range) as the demarcation line for outliers. This has worked so well, so we've continued using that value ever since.
How do you plot square roots on number line?
Then plot it!
How can an outlier be determined in a line plot?
If is does not cluster with the other points on a plot. example; the asterik is the outlier ........ ... ...... ...... .. ........ .. ...... ... .. . ...... __________* .. .. . . . . . .. ..
Is it possible to get an infinite root of a number?
Generally, no. But one of the infinite roots of 1 is 1. Otherwise one of the roots would be nearly 1. Just a whisker smaller than 1 if it was the root of a number between 0 and 1, and just a whisker larger if the number was greater than 1. If the number was less than 0, then the roots would vary from the real to the complex numbers.
