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for Practice of Statistics in the Life Sciences, Digital Update, 4e Brigitte Baldi, David Moore (All Chapters Download at the end of this File) (Missing Chapter, 16 and 25) Chapter 1
- Some variables that were recorded while studying diets of sharks are given below. Which of these variables is
- Amount of food eaten in a day by the shark being observed
- Age of the shark being observed
- Type of shark being observed
- Length of the shark being observed
not quantitative?
ANSWER: c
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- A survey is conducted among students taking a statistics class. Several variables are measured in the survey.
- Number of credit hours taken during the quarter
- Gender
- Parents' annual income
- High school GPA
Which of the variables listed below is qualitative?
ANSWER: b
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- Stream quality is based on the levels of many variables, including those listed below. Which of these
- Amount of phosphorus
- Number of distinct species present
- Amount of dissolved oxygen
- All of these answers are correct.
variables is quantitative?
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False 1 / 3
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- During winter, red foxes hunt small rodents by jumping into thick snow cover. Researchers report that a
- The three variables reported are all quantitative.
- The three variables reported are all categorical.
- Two of variables reported are quantitative and one is categorical.
- Two of variables reported are categorical and one is quantitative.
hunting trip lasts, on average, 19 minutes and involves, on average, 7 jumps. In a surprising finding, they report that 79% of successful jumps are made in the northeast direction. Which of the following statements about these results is TRUE?
ANSWER: c
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- A survey records many variables of interest to the researchers conducting the survey. The following variables
- Type of grain grown
- Number of acres owned
- Total farm income, before taxes, in 1993
- Number of children younger than age 12 on the farm
are some of the variables collected in a survey conducted by the USDA. Which of these variables is categorical?
ANSWER: a
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- The EPA sends out a survey to learn about people's water-usage habits. Some of the variables to be analyzed
- How many times a day do you take a shower?
- Do you leave the water running when brushing your teeth?
- How many times a week do you water your lawn?
- None of these answers is correct.
are responses to the following questions. Which of these questions leads to categorical responses?
ANSWER: b
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
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- Which of the following is a discrete variable?
- Number of different toxins present in a fish
- Length of a fish
- Weight of a fish
- All of these answers are correct.
ANSWER: a
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- Some variables were recorded while surveying plants in a wildlife area. Which of the following variables is
- Count of petals per flower
- Count of flowers per plant
- Plant height in centimeters
- Plant species
continuous?
ANSWER: c
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
- Some variables were recorded while surveying plants in a wildlife area. Which of the following variables is
- Count of petals per flower
- Whether the plant grows under the shade of another plant
- Plant height in centimeters
- Plant species
discrete?
ANSWER: a
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 2/8/2022 3:13 PM
DATE MODIFIED: 2/8/2022 3:13 PM
10. Here are records of eye color for a random sample of 103 individuals:
Eye color Number of individuals Blue 21 Green 7
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