Gavin F Revie

4 Questions 12 Answers 0 Followers

Questions related from Gavin F Revie

What is the meaning of 0 in contrast weights for LME?

I am currently working through Andy Field's "Discovering Statistics Using R". I've just got to chapter 14 "Mixed designs". He's talking about how you can use an LME in much the same way as an...

02 February 2016 2,728 3 View

Why am I getting a low ICC even though agreement is objectively high?

I am assisting a student with a measure of agreement for test-retest data using an ICC (2, 1) for absolute agreement. The data is ordinal with a 5 point scale, and according to Streiner et al...

02 February 2016 211 4 View

How do I deal with ordinal predictors in the context of multiple linear regression that will be reduced to a minimal adequate model?

Traditionally in linear regression your predictors must either be continuous or binary. Ordinal variables are often inserted using a dummy coding scheme. This is equivalent to conducting an...

01 January 2016 8,444 5 View

How can I determine the regression equation being used by the GLM function in R?

I have a student who has come to me with a problem. He is creating a Gaussian GLM model (which I believe is the same thing as running a standard LM?). He needs to be able to generate predictions...

01 January 2016 8,653 17 View