PlotStandardisedUpwards1dQQ
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Function Description
Returns a standardised ‘upwards’ (1-dimensional)
Quantile-Quantile (‘QQ’) plot. More precisely, returns a string which is the
(temporary) code for a SmartChart
that plots such information.
A standardised QQ-plot for a series of observations produces
a plot of the observed quantile value versus the expected quantile value, with
the series ‘standardised’ to have zero mean and unit standard deviation using a
formula along the lines of:
where is the (sample)
standard deviation of the data series .
A standardised ‘upwards’ QQ-plot is one where the bottom
half of this plot is flipped across the x-axis. It is particularly
useful as a precursor to a standardised 2-dimensional plot, which provides a
compact visual representation of how two series may jointly diverge from
normality in their extremities.
To allow users to plot several different series together,
this function takes as input two different arrays, one containing all of the
input data for all of the series (i.e. InputData), positioned
consecutively and the other containing the number of entries in each series
(i.e. InputDataSizes). So if InputDataSizes is {3,4} then two
series are being analysed simultaneously, the first with three data points and
the second with four, so InputData should have seven entries, the first
three of which are for the first series and the last four for the second
series.
For further details on how to use the ChartFormat
parameter to format a chart see using the ChartFormat
parameter.
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