A student who used a regression model that included indicator variables was upset when receiving only the following output on th

Question

Hatshy [7]

2 years ago

10

A student who used a regression model that included indicator variables was upset when receiving only the following output on th

e multiple regression printout: X TRANSPOSE X SINGULAR. What is a likely source of the difficulty

Computers and Technology

1 answer:

jeka57 [31] · Answer 1 · 2023-07-13T10:41:12+03:00

Answer:

This is a multicolinearity problem and the student should determine the variable(s) that cause(s) the problem and remove it.

Explanation:

This information means that there exists a linear combination between the independent variables. The problem might have developed due to multicolinearity producing almost perfectly linearly dependent columns.

This could also be as a results of single matrix created when the student use an incorrect indicator variables and included an additional indicator column which created linearly dependent columns.