Interpreting Box Plots – Data on Camping and Backpacking
INTERPRETING BOX PLOTS – DATA ON CAMPING AND BACKPACKING GOODS TEACHER VERSION Subject Level: Middle School Math Grade Level: 6 Approx Time Required:
Interpreting Box-and-Whisker Plots
2) The accompanying box-and-whisker plot represents the cost, in dollars, of twelve CD’s a) Which cost is the upper quartile? b) What is the range of the costs of the CD’s?
Interpreting Box-and-Whisker Plots
d) A score of an 85 on the box-and-whisker plot shown refers to: (1) the third quartile (3) the maximum score (2) the median (4) the mean
The BOXPLOT Procedure - Sas Institute
1076 F Chapter 28: The BOXPLOT Procedure Overview: BOXPLOT Procedure The BOXPLOT procedure creates side-by-side box-and-whiskers plots of measurements organized in groups A box-and-whiskers plot displays the mean, quartiles, and minimum and maximum observations for a group
40 years of boxplots - Hadley Wickham
2 Tukey’s boxplot The basic graphic form of the boxplot, the range-bar, was established in the early 1950’s Spear (1952, pg 164) Tukey’s contribution was to think deeply about appropriate summary statistics that worked for a wide range of data and to connect those to the visual components of the range bar Today, what we call a boxplot
Box plots & t-tests
4 Types of t-tests The type of t-test that you decide to use depends on your hypothesis and methods used to collect your data This handout provides background information about the t-test and explains how you could calculate it by hand
Figure 1: Box & Whisker Diagram, Tukey, 1977
With the release of V8 the BOXPLOT procedure became production, allowing side-by-side box-and-whisker plots to be produced on groups of data The minimum syntax of the procedure is as follows: PROC BOXPLOT ; PLOT analysis-variable * group-variable / options; RUN; Where: analysis-variable is the measurement of interest This will be plotted on
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