Unit 7 Day 9 Ch. 10 Quiz
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Last updated over 4 years ago
15 questions
0
After reading the text above, select your response.
To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your quiz until we can talk one-on-one so that you better understand before proceeding.
After reading the text above, select your response.
To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your quiz until we can talk one-on-one so that you better understand before proceeding.
4
More dogs are being diagnosed with thyroid problems than have been diagnosed in the past. A researcher identified 50 puppies without thyroid problems and kept records of their diets for several years to see if any developed thyroid problems. This is a(n)...
More dogs are being diagnosed with thyroid problems than have been diagnosed in the past.
A researcher identified 50 puppies without thyroid problems and kept records of their diets for several years to see if any developed thyroid problems.
This is a(n)...
4
Placebos are not used for:
Select all that apply.
Placebos are not used for:
Select all that apply.
4
The best experiments are:
The best experiments are:
4
The purpose of blocking it to...
The purpose of blocking it to...
4
Blocking in an experiment is similar to...
Blocking in an experiment is similar to...
2
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
How many factors are in this experiment?Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
How many factors are in this experiment?
Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
2
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
Name the factor(s) in this experiment:Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
Name the factor(s) in this experiment:
Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
4
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
How many levels of the factor(s) are in this experiment?Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
How many levels of the factor(s) are in this experiment?
Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.
2
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
Describe the levels (treatment groups) in this experiment
A dog food company wants to compare a new lower-calorie food with their standard dog food and their 'Mature Dog Food' to see if it’s effective in helping inactive dogs maintain a healthy weight. They have found several dog owners willing to participate in the trial. The dogs have been divided into groups based on their size: small, medium, or large breeds, and the company will randomly supply owners of each size dog with one of the three foods (new, standard, adult dog food).
The owners have agreed not to feed their dogs anything else for a period of 6 months, after which the dogs’ weights will be checked.
Describe the levels (treatment groups) in this experiment
4
Is blocking or blinding used in this experiment?Explain.
Is blocking or blinding used in this experiment?
Explain.
0
Can watching a movie temporarily raise your pulse rate? Researchers have 50 volunteers check their pulse rates. Then they watch an action film, after which they take check their pulse rates once more.Which aspect of experimental design is present in this research?
Which aspect of experimental design is present?
Can watching a movie temporarily raise your pulse rate? Researchers have 50 volunteers check their pulse rates. Then they watch an action film, after which they take check their pulse rates once more.
Which aspect of experimental design is present in this research?
Which aspect of experimental design is present?
6
Label each statement below as an Experiment or Observational Study.
Label each statement below as an Experiment or Observational Study.
- Similar patients with high blood pressure are randomly given three different doses of a new drug and their blood pressure is observed.
- ACT test scores of school athletes and non-athletes are compared.
- A survey examines if doctors with different specialties have different stress levels.
- Experiment
- Observational Study
4
A headline in the New York Times announced, “Research shows running can alter one’s moods”. The article reported that researchers gave a Personality Assessment Test to 231 males who run at least 20 miles a week, and found “statistically significant personality differences between the runners and the male population as a whole.” Do you think the headline was appropriate since it implies causation? Explain.
A headline in the New York Times announced, “Research shows running can alter one’s moods”. The article reported that researchers gave a Personality Assessment Test to 231 males who run at least 20 miles a week, and found “statistically significant personality differences between the runners and the male population as a whole.”
Do you think the headline was appropriate since it implies causation? Explain.
4
Researchers who wanted to see if drinking grape juice could help people lower their blood pressure got 120 non-smokers to volunteer for a study. They measured each person’s blood pressure and then randomly divided the subjects into two groups. One group drank a glass of grape juice every day while the other did not. After sixty days the researchers measured everyone’s blood pressure again. They reported that differences in changes in blood pressure between the groups were not statistically significant.
Explain what is meant by 'the results were not statistically significant'.
Researchers who wanted to see if drinking grape juice could help people lower their blood pressure got 120 non-smokers to volunteer for a study. They measured each person’s blood pressure and then randomly divided the subjects into two groups. One group drank a glass of grape juice every day while the other did not. After sixty days the researchers measured everyone’s blood pressure again. They reported that differences in changes in blood pressure between the groups were not statistically significant.
Explain what is meant by 'the results were not statistically significant'.