# The explanatory variables is are a body weight in

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Chapter 6 / Exercise 3
Understandable Statistics: Concepts and Methods
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59.The explanatory variable(s) is (are) A.body weight in kilograms. B.dosage in milligrams of ephedrine. C.number of revolutions of the exercise wheel. D.effect of ephedrine on the rat. E.species of rat. F.no ephedrine versus treatment of ephedrine.
60.The individual in this study is
61.This study is an example of
62.Does this study incorporate randomization?
63.Does this study incorporate replication? A.Yes B.No
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Chapter 6 / Exercise 3
Understandable Statistics: Concepts and Methods
Brase Expert Verified
64.Does this study incorporate control or comparison?
The remaining questions are True or False: 65.Most statisticians prefer bar graphs to pie charts because the reader more accurately visualizes the information presented. 66.Standard deviation is a measure of variability. 67.Range equals the largest observation minus the smallest observation. 68.Interquartile range is all of the values between Q1and Q3. 69.All lurking variables are confounded variables. 70.All voluntary response samples are samples of convenience. 71.All samples of convenience are non-probability samples. 72.Even probability samples can be biased due to poor interviewing and/or poorly worded questions. 73.x represents the mean of a population. 74.s represents the standard deviation of a sample.
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