Stats Functions
DADiSP/Stats includes several functions that encompass a wide variety
statistical processing and analysis.
Descriptive Statistics
| max |
Sample maximum |
| min |
Sample minimum |
| mean |
Sample average value |
| median |
Sample median value |
| sersize |
Sample size |
| stderr |
Sample standard error |
| stdev |
Sample standard deviation |
| var |
Sample variance |
Graphical Statistics
| boxplot |
Box plot of minimum, maximum, minimum error and maximum error |
| comboplot |
Combined plot of sample mean, median and variance |
| errorplot |
Error bar plot |
| hist |
N bin histogram |
| meanplot |
Plot of sample means |
| medianplot |
Plot of sample medians |
| polygraph |
Polynomial fit plot |
| rchart |
Statictical quality control range chart |
| varplot |
Plot of sample variances |
| xchart |
Statictical quality control mean chart |
| xrchart |
Combined statictical quality control mean and range chart |
| xyplot |
Scatter plot |
Probability and Hypothesis Tests
| chimultsum |
Chi square goodness of fit for 2xN matrix |
| chitestsum |
Chi square goodness of fit for 2x2 matrix |
| comp2sum |
Two series pooled variance T test |
| compnoeqsum |
Two series separate variance T test |
| ftestsum |
F Ratio test |
| ttestsum |
One tailed T test vs mean |
| ttest2sum |
Two tailed T test vs mean |
Regression
| mrcoefs |
Compute multiple regression coefficients |
| mrgraph |
Plot multiple regression results |
| mulregsum |
Multiple regression computatiuon and summary |
| polyfit |
Linear and polynomial regression |
ANOVA
| anova |
Analysis of Variance summary |
| correlatesum |
cross correlation summary |
Probability Density Functions
| chisum |
Chi square probability |
| fprobsum |
F probability |
| normsum |
Normal (Gaussian) probability |
| tprobsum |
T probability |
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