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 |