This section offers a brief overview of how DADiSP can be used as a visual, statistical analysis tool on both single series and matrices of data.
The following is a partial list of standard statistical and math functions that can be applied to a single variable data series. You can access most of these functions through the Math and Statistics option on the Analysis pull-down menu.
Function |
Description |
Calculates amplitude distribution. |
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Calculates the area under a curve. |
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Takes the derivative of a series. |
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Sorts a series in ascending or descending order and yields an output series containing the indices (i.e., observation numbers) of the sorted input series. |
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Integrates a series. |
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Displays the length of a series. |
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Determines linear regression. |
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Calculates linear regression of two. |
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Picks selected points by index. |
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Calculates the mean. |
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Calculates the median. |
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Calculates the partial sum. |
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Rearranges a series based upon specified indices. |
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Re-arranges the y values of a series in ascending or descending numerical order. |
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Displays MEAN and STDEV. |
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Provides the standard deviation. |
REORDER is similar to SORT, however, it works much faster on larger series. For example,
reorder(w1, grade(w1))
produces the same result as SORT(W1). Now try this:
reorder(sort(w1),grade(grade(w1),1))