Mean

n

Median

STDEV

Cp Cpk % out of tolerance

Min/Max

Compare with

Calculate Difference

Diff mean normally

Diff median not normally

Diff variation normally

Diff variation not normally

Normally test

Correlation

Regression

Kurtosis

Skewness

For commercial use

75 EURO

For some statistical tests it is possible to check if the comparing data-set is bigger or smaller or not equal. Testing if the data-set is bigger or smaller gives a 2 times more significant result because this is a one sided test. In some statistical environments it is not allowed to use one-sided tests. The safest test is not equal and is used as the default setting.

In Develve the p value when using bigger/smaller is always halve of the value when calculated in not equal mode. You self have to look if it is bigger or smaller than the comparing value. This increases the overview of the results.

Test what | With what statistical test |

Difference in Mean | t-test |

Difference in Median non Normal data | Wilcoxon–Mann–Whitney-test |

Difference in Variation | Variation F-test |

Difference in Variation non Normal data | Variation Levene test |

Difference in two proportions (Data set with only good or false results) | Proportions |