didacticPlot

0th

Percentile

didacticPlot

didacticPlot is useful for making ggplot2 plots of distributions of t, F, Chi^2, and Pearson r, showing a given value, and shading the arie covering the more extreme values. didacticPlotTheme is the basic theme.

Keywords
utilities
Usage
didacticPlot(foundValue, statistic, df1, df2 = NULL, granularity = 1000, xLim = NULL, yLab = NULL, lineCol = "red", lineSize=1, surfaceCol = "red", textMarginFactor = 20, sided="two")
didacticPlotTheme(base_size = 14, base_family = "")
Arguments
foundValue
The value to indicate (the 'found' value).
statistic
One of "r", "t", "f" or "chisq".
df1, df2
The degrees of freedom; only use df1 for the r, t and chi^2 test; for the F-test, use df1 for the degrees of freedom of the denominator and df2 for the degrees of freedom of the numerator.
granularity
Steps to use for x-axis.
xLim
Vector; minimum and maximum values on x axis.
yLab
Label on y axis.
lineCol
Colour of density line.
lineSize
Size of density line.
surfaceCol
Colour of coloured surface area.
textMarginFactor
Used to calculate how close to the vertical line text labels should appear.
sided
Whether to make a plot for a 2-sided or 1-sided test.
base_size, base_family
Passed on to the grey ggplot theme.
Value

didacticPlot returns an object that contains the plot in the \$plot element.

Aliases
• didacticPlot
• didacticPlotTheme
Examples
didacticPlot(1, statistic='chisq', df1=2);

didacticPlot(1, statistic='t', df1=40);

didacticPlot(2.02, statistic='t', df1=40, textMarginFactor=25);

### Two sample t-test for n1 = n2 = 250, showing
### p-value of 5%
# a<-didacticPlot(1.96, statistic='t', df1=498);


Documentation reproduced from package userfriendlyscience, version 0.5-2, License: GPL (>= 2)

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