twoGroupDesignMatrix function

Design Matrix for Two-Group Mean Estimation

This function returns the design matrix for two-group mean estimation. The first column contains indicators for membership in the first group, and the second column contains indicators for memebership in the second group.

twoGroupDesignMatrix(group.one.indices, group.two.indices)

Arguments

• group.one.indices: indices of observations in group one.
• group.two.indices: indices of observations in group two.

Returns

Returns a design matrix of size n by 2, where n is the sample size.

Details

Example

D <- twoGroupDesignMatrix(1:2, 3:5)
# print(D) displays the following:
[,1] [,2]
[1,]    1    0
[2,]    1    0
[3,]    0    1
[4,]    0    1
[5,]    0    1