Testing & Regression

Question 1

General Information and Terminology (HLM)

Answer 1

HLM can be used on data with many levels but we will only consider 2- level models

The lowest level of analysis is Level 1 (L1), the second lowest is Level 2(L2), and so on

In group research, Level 1 corresponds to the individual level and Level 2 corresponds to the group level

Question 2

When Should You Use HLM?

Answer 2

If you have mixed variables
If you have different number of observations per group
If you think a regression relationship varies by group
Any time your data has multiple levels