Concept explainers
a.
(i) Find and compare the percentage of white defendants with the percentage of black defendants who received the death penalty, when the victim was white.
(ii) Find and compare the percentage of white defendants with the percentage of black defendants who received the death penalty, when the victim was black.
b.
Identify the response variable, explanatory variable and control variable in Part (a).
c.
Construct 2×2 table that ignores instead of controls victim’s race.
Compare the overall percentages of black and white defendants who got death penalty.
Compare the result to Part (a).
d.
Explain with reason whether these data satisfy Simpson’s paradox.
e.
Explain the method of comparing the proportions of white and black defendants who get the death penalty for the following cases without calculations.
(i) by ignoring victim’s race.
(ii) by controlling victim’s race.
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Statistics: The Art and Science of Learning from Data (4th Edition)
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