Question: A study was performed to test the effect of attractiveness on perceived happiness. Three groups of participants were presented with photos of a very attractive person, a moderately attractive person, or an unattractive person. The participants then used a standardized scale to rate how happy they judged the person in the photo to be. The data are as follows:

The problem is to determine whether there is a significant overall result and, if there is, to determine which groups differ significantly. We won’t go through all the computations resulting in F (treat this example as another review exercise)’ the summary table is as follows:

ANOVA Summary table

Using the values from the summary table and from your computations on the raw scores, perform the LSD test.