Consider an Experiment in Which Rats Are Given Three Diets

question 35

Multiple Choice

Consider an experiment in which rats are given three diets (reduced calorie, control, and increased calorie) and their masses at 6 weeks of age are measured. Which of the following is NOT an aspect of poor design in the figure shown?
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• A) The two-dimensional nature of the bars subliminally exaggerates differences between the groups.
• B) The axis should go to zero to allow true judgement of relative differences.
• C) The data are shown in a manner that makes judging the values more difficult.
• D) The unit for mass in the axis label is redundant and makes the label overly wordy.

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