Applets: Summary Statistics - quantitative |||| Boxplot |||| Summary Statistics - categorical
Summary statistics - quantitative: Compute any of several summary statistics for the a set of quantitative values.
Understanding standard deviation: (Will be
putting together something from some of these on
the left, about half-way down)
Boxplot: Draw a boxplot of a set of quantitative values.
Summary statistics - categorical: Note that, to
have a summary statistic of categorical data, one must have an
entire set of numbers, as illustrated here. So we would usually
call this a "summary table" of the data rather than a summary
statistic.
You may choose to compute either the counts, proportions, or
percentages of each of the possible categories for a categorical
variable.
There are two reasons for this applet: (1) to see the data itself,
since most reports will only show one of the summary tables here
instead of the actual data and (2) to illustrate the different
ways a summary table can be given.
Note that the count method has more information than the others,
because you can find the total number of observations.
Cautions and clarifications:
Information about entering data. All of these applets allow you to enter data.
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