A very common question is whether it is legitimate to use Likert scale data in parametric statistical procedures that require interval data, such as Linear Regression, ANOVA, and Factor Analysis.
I was recently asked about whether it’s okay to treat a likert scale ascontinuousas a predictor in a regression model. Here’s my reply. In the question, the researcher asked about logistic regression, but the same answer applies to all regression models. 1. There is a difference between ...
However, it is not interval data. You cannot say the distances between “strongly agree” and “agree” would be the same as “neutral” and “disagree,” for example. People tend to think there is a bigger difference between items at the extremes of the scale than in the middle (there ...
Methods. This is a secondary data analysis using a dataset consisting of responses to the SF-36. The imputation methods under study include item mean substitution (IMS), person mean substitution (PMS), expectation-maximization algorithm (EM), and stochastic regression imputation (SRI). Missing ...