i am doing ordinal logistic regression using minitab, please find the results as below. when i asked my friend to cross check the results in "R" for the same data set, i was surprised to see different results come up. what was even more peculiar is that the coef no's seem to be similar however Minitab was showing -ve values where "R" was throwing +ve values and vice versa. i am curious to know why this happens and which result should i consider?

 

 

Coedf(Minitab)

Coef( r )

overall  Rating

-2.86%

2.86%

Parameter (A)

1.30%

-1.30%

Parameter (

9.24%

-9.24%

Parameter ©

7.11%

-7.16%

Parameter(D)

6.79%

-6.79%

 

 

Raw data as below..( overall rating = Y, Parameters(A,B,C,D,E)=X's)

 

Rating Scale of (1-5), 1 being lowest, 5 being highest

Overall Rating

Parameter(A)

Parameter(

Parameter( C )

Parameter (D)

Parameter ( E )

2

4

1

5

4

5

2

3

3

4

1

2

3

1

2

5

1

2

5

5

1

4

5

2

4

2

3

4

2

5

5

2

2

3

5

4

1

5

5

4

4

3

2

1

5

1

2

5

1

4

2

4

1

4

4

1

3

4

4

1

2

2

1

3

1

4

1

5

3

4

5

4

4

5

5

2

5

4

3

1

1

2

5

5

4

2

1

2

3

5

5

5

3

1

3

5

5

4

1

2

4

3

2

5

3

2

3

2

3

3

2

2

3

4

1

3

2

5

2

3

1

3

1

5

4

5

3

2

2

4

3

2

5

2

2

4

1

5

4

3

1

1

1

4

3

3

4

1

1

4

2

5

4

3

3

5

3

5

4

2

2

3

4

5

1

3

1

3

5

1

1

4

4

3

5

5

2

2

4

5

5

5

5

4

2

2

4

1

5

1

3

3

3

2

3

3

2

2

3

5

3

1

5

4

1

1

1

2

4

5

5

4

1

2

4

1

1

5

5

5

5

4

5

2

5

3

3

1

5

5

4

5

2

3

5

2

5

4

3

3

4

2

1

3

3

4

4

1

5

2

3

3

2

4

5

3

5

4

5

4

2

1

1

2

3

2

4

4

2

5

4

2

1

5

1

5

5

2

1

5

1

5

2

3

3

2

3

5

1

3

2

4

4

3

1

1

2

3

4

2

1

3

3

1

3

5

2

2

5

2

3

5

2

3

5

5

3

4

2

2

1

1

4

5

5

2

4

1

2

3

1

5

5

2

1

4

1

5

4

5

2

3

1

4

1

3

4

5

1

3

5

2

1

1

4

1

5

4

4

5

2

2

1

1

2

4

1

1

4

1

1

3

2

1

4

3

3

1

5

5

2

3

1

4

3

5

3

3

2

4

3

4

5

3

3

4

2

5

1

2

1

2

3

5

1

1

1

5

1

1

2

3

3

1

2

4

4

4

3

4

2

3

5

1

4

4

1

4

2

4

3

3

5

1

5

1

3

1

1

2

5

2

4

1

5

3

2

3

5

3

1

5

4

1

5

4

1

5

1

3

2

4

2

1

4

4

1

4

1

2

1

5

5

2

4

2

3

2

5

1

1

2

2

1

5

1

4

2

5

3

2

5

1

1

2

1

1

2

5

5

4

1

3

5

3

1

3

1

1

5

2

2

5

3

5

5

4

2

1

4

1

5

3

2

1

3

5

2

5

4

5

3

3

2

4

5

4

2

4

5

1

4

2

4

1

5

1

2

3

4

5

5

3

4

5

3

2

4

4

3

3

4

2

5

4

4

1

3

5

2

1

2

3

2

2

5

3

5

3

1

4

3

3

3

4

5

1

4

 

In Addition to my previous question, i would like to understand, what would be acceptable R-square value for ordinal regression? is it realist to expect to R-square > 0.50?

 

 

 

Regards

Mahadevan.S

Great Information...!!