What would the R script be for determining assumptions, keeping in mind these questions:

Additivity:

a)We won't need to calculate a correlation table. Why not?

Linearity:

a)Include a picture that shows how you might assess multivariate linearity.

b)Do you think you've met the assumption for linearity?

Normality:

a)Include a picture that shows how you might assess multivariate normality.

b)Do you think you've met the assumption for normality?

Homogeneity/Homoscedasticity:

a)Include a picture that shows how you might assess multivariate homogeneity.

b)Do you think you've met the assumption for homogeneity?

c)Do you think you've met the assumption for homoscedasticity?