The Analysis of Biological Data
2nd Edition
ISBN: 9781936221486
Author: Michael C. Whitlock, Dolph Schluter
Publisher: W. H. Freeman
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Chapter 1, Problem 10PP
(a)
To determine
To find: The categorical and numerical variable in the provided case.
(b)
To determine
To find: The categorical and numerical variable in the provided case.
(c)
To determine
To find: The categorical and numerical variable in the provided case.
(d)
To determine
To find: The categorical and numerical variable in the provided case.
(e)
To determine
To find: The categorical and numerical variable in the provided case.
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Students have asked these similar questions
A. Sam's times varied more over the season that Mike's times.
B. Sam's times varied about the same over the season as Brett's times.
C. Brett's times varied more over the season than Mike's times.
D. Mike's times varied more over the season than Brett's times.
What is meant by the statement that two variables are related?
Choose the correct answer.
OTwo variables are related when the value of one can be derived mathematically from the value of the other.
Two variables are related when a scatterplot can be made of points using the two variables as values.
OTwo variables are related when a change in one can be shown to cause a change in the other.
OTwo variables are related when a discernible pattern exists between them.
The r code for side by side boxplot of vitamind v newage and vitamin d v country.
Scatterplot code for relationship between vitamin d level and age.
Chapter 1 Solutions
The Analysis of Biological Data
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- When two variables covary, the a. variables are related to each other b. variables tend to change together have something in common with each other c. variables are causally related d. relationship between the variables is spuriousarrow_forward15 wheelchair users were randomly assigned to three groups with 5 in each group. These participants navigated in virtual-reality settings. Group 1 participants were in the virtual-reality setting (a building) as wheelchair users. Group 2 participants were in the virtual-reality setting in a wheelchair pushed by a walking person. Group 3 participants walked without aid in the virtual-reality setting. Joan measured the time each participant needed to complete the navigation of the virtual-reality setting. What is the independent variable(s)?arrow_forwardThe degrees of freedom are directly related toarrow_forward
- The following equation explains weekly hours of television viewing by a child in terms of the child's age, mother's education, father's education, and number of siblings: tvhours* = Bo + B1age + B2age? + B3motheduc + Bafatheduc + B5sibs + u We are worried that tvhours* is measured with error in our survey. Let tvhours denote the reported hours of television viewing per week. (a) What do the classical errors-in-variables (CEV) assumptions require in this application? (b) Do you think the CEV assumptions are likely to hold? Explain.arrow_forwardA professor in a university is trying to conduct a research study. His study is trying to determine if his 8 am lecture is more interactive with him than his 2 pm lecture. What is the independent variable? How many levels are there for the independent variable? What is the dependent variable?arrow_forwardSuppose you have access to a database with the variables listed below. Choose two variables you are interested in exploring that may be related (a predictor and outcome). What type of variable is each (ordinal, nominal, continuous, etc.)arrow_forward
- Relationships between two or more variables can be identified using crosstabulation. Select one: O True O Falsearrow_forwardProblem: In an examination at which 600 candidates appeared, boys outnumbered girls by 16% of all candidates. Number of passed candidates exceeded the number of failed candidates by 310. Boys failing in the examination numbered 88. Find the coefficient of association between male sex and success in examination.arrow_forwardSuppose you were to collect data for the following pair of variables, gasoline: number of miles driven since your last fill up, gallons of gas remaining in your tank. You want to make a scatterplot. Which variable would you use as the explanatory variable? number of miles driven since your last fill up gallons of gas remaining in your tank Which variable would you use as the response variable? O number of miles driven since your last fill up gallons of gas remaining in your tank Would you expect to see a positive or negative association? positive negative O neitherarrow_forward
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