Which of the following statistical questions would best be answered by an observational study? (1 point)
A. What is the effect of different durations of sunlight exposure on a plant’s growth?
B. What is the mean household income of New Englanders?
C. Does the size of a football affect the distance a quarterback can accurately throw it?
D. What is the rate of growth of a certain animal species?
3 answers
B. What is the mean household income of New Englanders?
Q1. Which of the following statistical questions would best be answered by an observational study? (1 point)
A1. What is the rate of growth of a certain animal species?
Q2. Which of the following is an example of selection bias? (1 point)
A2. asking book store customers for volunteers to provide a review of a new book
Q3. Which of the following describes a statistical question that would best be answered by a survey? (1 point)
A3. What percentage of Ivy League students consider transferring after their freshmen year?
Q4. Chris is curious about how long different insects can live under extreme heat conditions. He decides to place insects in a heated oven and study how long it takes for them to stop moving. Would Chris’s statistical question best be answered by an observational study? (1 point)
A4. No, an observational study would not be best because the study is not ethical.
Q5. The local library has 4,250 library card holders. The library sends out a survey to every fifth library card holder. If all of the surveyed participants respond, what percent of the total population has been surveyed? (1 point)
A5. 20%
Q6. A statistician develops a model to determine how many minutes it will take an individual to fall asleep given the number of hours they spent looking at a screen throughout the day. Using their model, y=7+2.6x, how many minutes should it take to fall asleep for someone who watched a screen for five hours throughout the day? (1 point)
A6. 20 minutes
Q7. Which situation describes a dataset that contains an outlier? (1 point)
A7. the daily revenue of a mechanic shop, including the day they are closed
Q8. Which of the following is an example of a loaded question? (1 point)
A8. Do you prefer this beloved fantasy series or that less acclaimed mystery novel?
Q9. A well-known supermarket in the U.S. wants to determine what percent of storegoers are vegetarian. They randomly survey 5 people every hour at one of their grocery stores for a day. What type of bias exists in this survey? (1 point)
A9. Selection Bias
Q10. Which of the following is the best definition of outlier? (1 point)
A10. a value that skews results because it is much higher or lower than the other data
Q11. What is random selection? (1 point)
A11. an experiment in which each participant has an equal probability of occurrence
Q12. What is the first step in building a model? (1 point)
A12. Identify the statistical question, hypothesis, or theory.
A1. What is the rate of growth of a certain animal species?
Q2. Which of the following is an example of selection bias? (1 point)
A2. asking book store customers for volunteers to provide a review of a new book
Q3. Which of the following describes a statistical question that would best be answered by a survey? (1 point)
A3. What percentage of Ivy League students consider transferring after their freshmen year?
Q4. Chris is curious about how long different insects can live under extreme heat conditions. He decides to place insects in a heated oven and study how long it takes for them to stop moving. Would Chris’s statistical question best be answered by an observational study? (1 point)
A4. No, an observational study would not be best because the study is not ethical.
Q5. The local library has 4,250 library card holders. The library sends out a survey to every fifth library card holder. If all of the surveyed participants respond, what percent of the total population has been surveyed? (1 point)
A5. 20%
Q6. A statistician develops a model to determine how many minutes it will take an individual to fall asleep given the number of hours they spent looking at a screen throughout the day. Using their model, y=7+2.6x, how many minutes should it take to fall asleep for someone who watched a screen for five hours throughout the day? (1 point)
A6. 20 minutes
Q7. Which situation describes a dataset that contains an outlier? (1 point)
A7. the daily revenue of a mechanic shop, including the day they are closed
Q8. Which of the following is an example of a loaded question? (1 point)
A8. Do you prefer this beloved fantasy series or that less acclaimed mystery novel?
Q9. A well-known supermarket in the U.S. wants to determine what percent of storegoers are vegetarian. They randomly survey 5 people every hour at one of their grocery stores for a day. What type of bias exists in this survey? (1 point)
A9. Selection Bias
Q10. Which of the following is the best definition of outlier? (1 point)
A10. a value that skews results because it is much higher or lower than the other data
Q11. What is random selection? (1 point)
A11. an experiment in which each participant has an equal probability of occurrence
Q12. What is the first step in building a model? (1 point)
A12. Identify the statistical question, hypothesis, or theory.
Q1. A1. What is the rate of growth of a certain animal species?
Q2. A2. Asking book store customers for volunteers to provide a review of a new book
Q3. A3. What percentage of Ivy League students consider transferring after their freshmen year?
Q4. A4. No, an observational study would not be best because the study is not ethical.
Q5. A5. 20%
Q6. A6. 20 minutes
Q7. A7. The daily revenue of a mechanic shop, including the day they are closed
Q8. A8. Do you prefer this beloved fantasy series or that less acclaimed mystery novel?
Q9. A9. Selection Bias
Q10. A10. A value that skews results because it is much higher or lower than the other data
Q11. A11. An experiment in which each participant has an equal probability of occurrence
Q12. A12. Identify the statistical question, hypothesis, or theory
Q2. A2. Asking book store customers for volunteers to provide a review of a new book
Q3. A3. What percentage of Ivy League students consider transferring after their freshmen year?
Q4. A4. No, an observational study would not be best because the study is not ethical.
Q5. A5. 20%
Q6. A6. 20 minutes
Q7. A7. The daily revenue of a mechanic shop, including the day they are closed
Q8. A8. Do you prefer this beloved fantasy series or that less acclaimed mystery novel?
Q9. A9. Selection Bias
Q10. A10. A value that skews results because it is much higher or lower than the other data
Q11. A11. An experiment in which each participant has an equal probability of occurrence
Q12. A12. Identify the statistical question, hypothesis, or theory
1 answer