# Anàlisi de variància (ANOVA)

Produces the analysis of variance (ANOVA) of a given data set

Per accedir a esta orde...

Choose Data - Statistics - Analysis of Variance (ANOVA)

ANOVA is the acronym for ANalysis Of VAriance. This tool produces the analysis of variance of a given data set

For more information on ANOVA, refer to the corresponding Wikipedia article.

Interval d'entrada: la referència de l'interval de les dades a analitzar.

Results to: The reference of the top left cell of the range where the results will be displayed.

#### Agrupat per

Select whether the input data has columns or rows layout.

## Tipus

Select if the analysis is for a single factor or for two factor ANOVA.

## Paràmetres

Alpha: the level of significance of the test.

Rows per sample: Define how many rows a sample has.

#### Exemple

Les dades següents s'usen com a exemple

 A B C 47 67 33 36 68 42 40 65 44 39 64 60 38 43 47 84 62 29 80 51 27 49 40 57 49 12 56 33 60 57 26

The following table displays the results of the analysis of variance (ANOVA) of the sample data above.

 ANOVA - Single Factor Alfa 0.05 Grups Count Sum Mean Variance Columna 1 11 461 41.9090909091 139.4909090909 Columna 2 10 597 59.7 287.1222222222 Columna 3 10 447 44.7 227.3444444444 Font de la variació SS df MS F Valor P F-critical Between Groups 1876.5683284457 2 938.2841642229 4.3604117704 0.0224614952 3.340385558 Within Groups 6025.1090909091 28 215.1824675325 Total 7901.6774193548 30

Ens cal la vostra ajuda!