PSYC 217 Chapter Notes - Chapter 12: Nominal Group Technique, Frequency Distribution, Partial Correlation
Document Summary
Learning objectives: describe frequency distributions and ways to visually depict them. Identify ways to describe and graph relationships involving nominal variables. Identify and interpret an estimate of effect size between two groups. Interpret correlation coefficients and scatterplots to describe relationships among continuous variables: describe how regression equations and multiple correlations are used to predict behavior, discuss how a partial correlation addresses the third variable problem. Frequency distribution: number of participants who receive or select each score on a variable, can be used for any scale. We see this most commonly when we get test scores back and we can see how many stude(cid:374)ts (cid:396)e(cid:272)ei(cid:448)ed a gi(cid:448)e(cid:374) s(cid:272)o(cid:396)e o(cid:374) the e(cid:454)a(cid:373). The(cid:455)"(cid:396)e ofte(cid:374) depi(cid:272)ted graphically so you can see which score is most frequent and look at the distribution of scores and see whether or not there are any outliers scores that are unusual, unexpected or very different.
