Unit 7 Day 9 Ch 10 Quiz

This is an individual quiz. I am assessing your understanding level of the material we have covered.
The quiz should be done with no outside assistance other than the use of your notes, class slide decks or the posted Ch. 10 slide deck. You should not request or accept the assistance of a friend, family member or neighbor. Submitting answers and/or work done by or with the assistance of someone else is grounds for an Academic Integrity write-up.
This is an individual quiz, designed to assess the level of your understanding.
Submitting answers and/or work done by or with the assistance of someone else is grounds for an Academic Integrity write-up.

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.

4

More dogs are being diagnosed with thyroid problems than have been diagnosed in the past.
A researcher identified 50 dogs at a veterinary clinic, checked their medical histories to see if they had thyroid problems and recorded their diet to see if there was a relationship between diet and thyroid problems.
This is a(n)...

4

Placebos are used for:

Select the one that applies.

4

The best experiments are:

4

The purpose of blinding it to:

6

Where is randomization involved in the following:

Draggable item		Corresponding Item
Sample Survey		When selecting the subjects.
Experimental Studies		When placing the subjects into treatment groups
Observational Studies		Randomization may not be used.

4

A researcher wants to compare the effect of a new type of shampoo on hair condition.
The researcher believes that men and women may react to the shampoo differently.
Additionally, the researcher believes that the shampoo will react differently on hair that is dyed.
The subjects are split into four groups: men who dye their hair; men who do not dye their hair; women who dye their hair; women who do not dye their hair.
Subjects in each group are randomly assigned to the new shampoo and the old shampoo.

How many factors are in this experiment?
Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.

2

A researcher wants to compare the effect of a new type of shampoo on hair condition.
The researcher believes that men and women may react to the shampoo differently.
Additionally, the researcher believes that the shampoo will react differently on hair that is dyed.
The subjects are split into four groups: men who dye their hair; men who do not dye their hair; women who dye their hair; women who do not dye their hair.
Subjects in each group are randomly assigned to the new shampoo and the old shampoo.

Name the factor(s) in this experiment:
Remember, the factor is the thing(s) being evaluated or manipulated in the experiment.

4

A researcher wants to compare the effect of a new type of shampoo on hair condition.
The researcher believes that men and women may react to the shampoo differently.
Additionally, the researcher believes that the shampoo will react differently on hair that is dyed.
The subjects are split into four groups: men who dye their hair; men who do not dye their hair; women who dye their hair; women who do not dye their hair.
Subjects in each group are randomly assigned to the new shampoo and the old shampoo.

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 researcher wants to compare the effect of a new type of shampoo on hair condition.
The researcher believes that men and women may react to the shampoo differently.
Additionally, the researcher believes that the shampoo will react differently on hair that is dyed.
The subjects are split into four groups: men who dye their hair; men who do not dye their hair; women who dye their hair; women who do not dye their hair.
Subjects in each group are randomly assigned to the new shampoo and the old shampoo.

Describe the levels (treatment groups) in this experiment

4

Is blocking or blinding used in this experiment?
Explain.

0

Does donating blood lower cholesterol levels? 50 volunteers have a cholesterol test, then donate blood, and then have another cholesterol test.
Which aspect of experimental design is present?

6

Label each statement below as an Experiment or Observational Study.

Similar patients with heartburn are randomly given two different doses of a new drug (or a placebo) and their heartburn symptoms are observed.
The weights of school athletes and non-athletes are compared.
Incidences of cancer in people who lived near a chemical factory are compared to those who did not live near this factory.

Experiment
Observational Study

4

A headline in a local newspaper announced, “Video game playing can lead to better spatial reasoning abilities.” The article reported that an observational study found “statistically significant differences” between teens who play video games and teens who do not, with teens who play video games testing better in spatial reasoning.
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 statistically significant.

Explain what is meant by 'the results were statistically significant'.

Unit 7 Day 9 Ch 10 Quiz

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.

Placebos are used for:Select the one that applies.

The best experiments are:

The purpose of blinding it to:

Where is randomization involved in the following:

Is blocking or blinding used in this experiment?Explain.

Does donating blood lower cholesterol levels? 50 volunteers have a cholesterol test, then donate blood, and then have another cholesterol test. Which aspect of experimental design is present?

Label each statement below as an Experiment or Observational Study.

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.

Placebos are used for:Select the one that applies.

The best experiments are:

The purpose of blinding it to:

Where is randomization involved in the following:

Is blocking or blinding used in this experiment?Explain.

Does donating blood lower cholesterol levels? 50 volunteers have a cholesterol test, then donate blood, and then have another cholesterol test. Which aspect of experimental design is present?

Label each statement below as an Experiment or Observational Study.

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.

Placebos are used for:

Select the one that applies.

Is blocking or blinding used in this experiment?
Explain.

Does donating blood lower cholesterol levels? 50 volunteers have a cholesterol test, then donate blood, and then have another cholesterol test.
Which aspect of experimental design is present?

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.

Placebos are used for:

Select the one that applies.

Is blocking or blinding used in this experiment?
Explain.

Does donating blood lower cholesterol levels? 50 volunteers have a cholesterol test, then donate blood, and then have another cholesterol test.
Which aspect of experimental design is present?