scatterplot: Interpretation of a Scatterplot

August 13, 2017
By

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Name:
scatterplot
Type:
Description:
Scatterplot in an (x, y) regression setup needs to be interpreted regarding location/spread of the marginal distributions, the correlation in the joint distribution, and the corresponding regression slope. Data are drawn randomly from a suitable data-generating process so that each multiple-choice item is either about correct or clearly wrong.
Solution feedback:
Yes
Randomization:
Random numbers, text blocks, and graphics
Mathematical notation:
No
Verbatim R input/output:
No
Images:
Yes
Other supplements:
No
Raw: (1 random version)
PDF:
scatterplot-Rnw-pdf
scatterplot-Rmd-pdf
HTML:
scatterplot-Rnw-html
scatterplot-Rmd-html

Demo code:

library("exams")

set.seed(1090)
exams2html("scatterplot.Rnw")
set.seed(1090)
exams2pdf("scatterplot.Rnw")

set.seed(1090)
exams2html("scatterplot.Rmd")
set.seed(1090)
exams2pdf("scatterplot.Rmd")

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