2.24. You are directing a study to determine the factors that relate to good academic performance at your school.

(a) Describe how you might select a sample of 100 students for the study.

(b) List some variables that you would measure. For each, provide the scale you would use to measure it, and indicate whether statisti- cal analysis could treat it as (i) categorical or quantitative, (ii) nominal, ordinal, or interval, (iii) continuous or discrete.

(c) Give an example of a research question that could be addressed using data on the variables you listed in (b).