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# Anàlisi de variància (ANOVA)

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

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Trieu Dades ▸ Estadístiques ▸ Anàlisi de la variància (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.

### Dades

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
1 | Matemàtiques | Física | Biologia
--- | --- | --- | ---
2 | 47 | 67 | 33
3 | 36 | 68 | 42
4 | 40 | 65 | 44
5 | 39 | 64 | 60
6 |  | 38 | 43
7 | 47 | 84 | 62
8 | 29 | 80 | 51
9 | 27 | 49 | 40
10 | 57 | 49 | 12
11 | 56 | 33 | 60
12 | 57 |  |
13 | 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 |  |  |

Temes relacionats

Sampling

Descriptive Statistics

Anàlisi de variància (ANOVA)

Correlation

Covariance

Exponential Smoothing

Moving Average

Regression Analysis

Paired t-test

Prova F

Prova Z

Prova khi quadrat

Fourier Analysis