DAA_08_R-testing

If I want to model the relationship between Petal.Length and Petal.Width in iris dataframe, I should use

• ANOVA

• Correlation

• Kruskal-Wallis

• Discriminant

If I want to model the effect of Species on Petal.Width in iris dataframe, I should use

• ANOVA

• Correlation

• Kruskal-Wallis

• Discriminant

If I want to model the effect of length and width of sepals and petals on the Species in iris dataframe, I should use

• ANOVA

• Correlation

• Kruskal-Wallis

• Discriminant

If I want to reduce the number of several very correlated variables to only one variable I should use

• Principal components Analysis (PCA)

• Correlation

• Kruskal-Wallis

• K-means

If I want to separate a number of natural groups from several numeric variables, for example I want to separate three varieties from a bunch of genetic numeric variables, I could use.

• ANOVA

• Correlation

• Kruskal-Wallis

• K-means