A box plot provides a simple graphical summary of a set of data and shows a measure of central location (the median), the average,and measures of dispersion. Box plots are used through the use of quantiles to measure the 25th percentile range, the 50th percentile range or median range, and the 75th%, with 10% as the minimum range and 90% as the upper. The above image is a box plot comparing a guinea's tooth growth with the amount of vitamin C intake they get. You can see that the data is grouped into box plots, or quantiles, with a lower quantile(25%), the median(50%) depicted by the line through each box, and the upper quantile(75%) above the median to convey it's information.
No comments:
Post a Comment