David M Sidhu

5 Questions 6 Answers 0 Followers

Questions related from David M Sidhu

Calculating power for a multivariate regression?

How do I determine the number of participants needed to achieve X power, with a small effect size (assuming f2 of .02), for a multivariate regression? As far as I can tell G*Power can only do...

12 December 2017 8,192 4 View

What is the best way to estimate a linear mixed effects model using MCMC sampling in R?

I am interested in running a model predicting a continuous variable, using several fixed effects as well as random subject and item effects. I would like to estimate the model using MCMC sampling...

10 October 2017 3,942 6 View

Am I right in this interpretation of how LASSO deals with the issues of stepwise model building?

I have been trying to understand exactly how using LASSO to build a model deals with the issues of stepwise model building. I would love to hear if I'm on the right track with this...

08 August 2017 6,472 3 View

Is there anything wrong with a perfectly correlated random slope and intercept, assuming there is variation in both?

I know that when there is close to zero variance in either random effect, a perfect correlation can mean that the model isn't able to estimate both effects. However, I have a good deal of variance...

08 August 2017 4,917 8 View

Is there a database of object concepts that have been normed on semantic differential scales?

I'm wondering if there is a database of objects (either word or picture targets) that have been rated by a good number of people (>=30) on Osgood et al.'s semantic differential scales (e.g.,...

04 April 2017 6,416 1 View