MCS 3030 Chapter 1: MCS 3030 - Chapter 1.docx
10 May 2014
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Democrat or a republican in the next presidential election: relational studies look at the relationships between two or more variables, a public opinion poll that compares the proportion of males and females that say they would vote for a democratic or a republican candidate in the next presidential election, casual studies are designed to determine whether one or more variables (a program or treatment variable) cause or affect on or more outcome variables a. Longitudinal study is one that takes place over time: you measure your research participants on at least two separate occasions or at least two points in time, when you measure at different time points, we often say that you are measuring multiple waves of measurement (cid:224) just as with the repeated motion of the waves in the ocean, a further distinction is made between two types of longitudinal designs: repeated measures and time series.
