Sociology 2205A/B Lecture Notes - Lecture 4: Rh Blood Group System, Lincoln Near-Earth Asteroid Research, Scatter Plot
15 Oct 2018
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Scan chapter 11, although the focus there is on inference (not descriptives) for comparing sample means. Download and study these powerpoint slides, and make sure to attend class. Calculations & procedures: numerically: nothing new, we use measures of center, dispersion, and shape we learned in univariate descriptives. But now we apply them separately for each group in the sample: graphically: boxplot. Both histograms and boxplots can be used to summarize continuous variables. Histograms tend to be better for univariate descriptives. Boxplots tend to be better for bivariate descriptives. Boxplots: boxplots are a more typical way of displaying the distribution of continuous variable when comparing groups. How to do it in spss: go to graphs legacy dialogs boxplot. Lea(cid:448)e the default optio(cid:374)s (cid:862) i(cid:373)ple (cid:271)o(cid:454)plot(cid:863) a(cid:374)d (cid:862) u(cid:373)(cid:373)aries for groups of (cid:272)ases(cid:863: click on define. 2: put your continuous variable into variable window, put your categorical into category axis, click ok.
