Free Printable Data Collection & Experimental Design AP Statistics

1.

Runners after an ultramarathon commonly develop respiratory infections. We want to know if taking 600 milligrams of vitamin C daily will reduce these infections. Researchers randomly assigned 100 ultramarathon runners to receive either vitamin C or placebo. All subjects were watched for 14 days after the big race to see if infections developed. What are the possible lurking(confounding) variables?

a)

Age of the runner

b)

weight of the runner

c)

gender of the runner

d)

all of the above

2.

Runners after an ultramarathon commonly develop respiratory infections. We want to know if taking 600 milligrams of vitamin C daily will reduce these infections. Researchers randomly assigned 100 ultramarathon runners to receive either vitamin C or placebo. All subjects were watched for 14 days after the big race to see if infections developed. The type of design used here?

a)

matched pairs

b)

randomized block

c)

completely randomized

d)

stratified

3.

Can pleasant aromas help a student learn better? Two researchers believed that the presence of a floral scent could improve a person's learning ability in certain situations. They had 22 people work through a pencil-and-paper maze 6 times. Three of the times they wore a floral-scented mask and three times they wore an unscented mask. The three trials for each mask followed one another. Testers measures the length of time it took subjects to complete each of the six trials. They reported that, on average, subjects wearing the floral-scented mask completed the maze more quickly that those wearing the unscented mask, although, the difference was not statistically significant. This study is:

a)

a convenience sample

b)

an oberservational study

c)

an experiment, but not double-blind

d)

a double-blind experiment

4.

The most important advantage of experiments over observational studies is that

a)

A) experiments are usually easier to carry out

b)

B)Experiments can usually give better evidence of causation

c)

C) Confounding cannot happen in experiments

d)

D) Observational studies cannot use random samples

5.

In order to perform an experiment using 60 members of a gym, I first divide the list of members into men and women because I feel that the results will be different based on gender. I then randomly choose 30 men and 30 women. I assign half of the men to the treatment group and half to the control group. I repeat this procedure with the women. This is an example of a:

a)

randomized comparative design

b)

blocking design

c)

matched pairs design

d)

double blind simple random sample

6.

A market research company wishes to find out whether the population of students at a university prefers Starbucks or Dunkin Donuts. A random sample of students is selected, and each student is asked first to try both but the order they try them is randomly decided with a coin toss (heads: Starbucks, then Dunkin. tails: vice versa). They then indicate which brand they prefer. This is an example of

a)

a completely randomized experiment

b)

an observational study

c)

a stratified sample

d)

a matched pairs experiment

7.

Why do we randomize in an experiment or a survey?

a)

Because we have to

b)

It helps reduce the effects of confounding variables

c)

It eliminates all possible confounding variables

d)

It makes sampling easier

8.

Identify the design for the experiment

a)

completely randomized, the treatment is pesticide

b)

randomized block, blocked on tree type, the treatment is pesticide

c)

This experiment is single blind, blocked by pesticide

d)

The experiment is double blind, the factors are tree type and pesticide

9.

What are the principles of a well-designed study?

a)

Random Assignment

b)

Control

c)

Replication

d)

Comparison

e)

All of the above

10.

Which experimental method involves studying each and every member of the population of interest?

a)

Sampling

b)

Census

c)

Random Sampling

d)

Block Design

11.

Stephen observed students entering a classroom for class and recorded whether they were in dress code.

What data collection method was used

a)

Observational Study

b)

Experimental Study

c)

Block Design

d)

Randomized

12.

Elise gave each member of the class a random cookie, some from recipe A and some from recipe B. Then she observed which students returned for a second cookie.

What are the treatments in this scenario?

a)

The Students

b)

Students who returned for a cookie

c)

The different cookie types/recipes

d)

Whether the student returned for a second cookie

13.

Elise gave each member of the class a random cookie, some from recipe A and some from recipe B. Then she observed which students returned for a second cookie.

What data collection method was used?

a)

Observational Study

b)

Experiment

c)

Survey

d)

Simulation

14.

Nick stook outside a movie theater and asked many of the patrons if they thought the movie they saw was good.

What data collection was used?

a)

Observational Study

b)

Experiment

c)

Survey

d)

Simulation

15.

A researcher wants to collect information about the number of hours of sleep a high school student in the US gets per day.

What is the population?

a)

Number of Hours of Sleep

b)

High School Students in the US

c)

About 17 billion

d)

The high school students that answer the survey

16.

A group of 100 people with CoVid are asked about where they've traveled recently in order to study the disease transmission

What design type best describes this study?

a)

Retrospective Observational

b)

Prospective Observational

c)

Retrospective Experimental

d)

Prospective Experimental

17.

If a researcher were to interview every 10th student who enters the school in the morning. What type of sampling is this?

a)

simple random

b)

voluntary response

c)

systematic

d)

convenience

18.

If a researcher were to assign each car in a dealership a number and then use a random-number table to select the cars to be inspected, what type of sampling is this?

a)

systematic

b)

simple random sample

c)

convenience

d)

Self - selected (volunteer)

19.

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class. What type of sampling is this?

a)

Convenience Sampling

b)

Systematic Random Sampling

c)

Simple Random Sampling

d)

Volunteer response

20.

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

a)

Simple Random Sample

b)

Stratified Random Sample

c)

Voluntary Response

d)

Systematic Random Sampling

21.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

a)

Simple Random Sample

b)

Stratified Random Sample

c)

Cluster Random Sample

d)

Systematic Random Sampling

22.

A ___ is a small portion of the population used to gather data from.

a)

Systematic Sampling Method

b)

Sample

c)

Population

d)

Bias

23.

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

a)

Stratified.

b)

Systematic

c)

Cluster

d)

Biased.

24.

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey. What type of sampling is this?

a)

Simple Random

b)

Cluster

c)

Stratified

d)

Systematic

25.

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

a)

Simple Random Sample

b)

Stratified Random Sample

c)

Voluntary Response

d)

Systematic Random Sampling

26.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

a)

Simple Random Sample

b)

Stratified Random Sample

c)

Cluster Random Sample

d)

Systematic Random Sampling

27.

This type of sample is selected by dividing the population into subgroups and then taking a fixed number of units from each group using the simple random sample.

a)

stratified

b)

cluster

c)

judgment

d)

experimental

28.

The experimental group is:

a)

Study in which neither the experimenter nor the subjects know if the subjects are in the experimental or control group

b)

study in which the subject do not know if they are in the experimental group or control group

c)

subjects in an experiment who are not subjected to the independent variable and may receive a placebo treatment

d)

the group to which the researchers manipulate the independent variable

29.

They are attempts to establish a cause-and-effect relationship between two variables by manipulating one variable.

a)

Observations

b)

Experiments

c)

Correlations

d)

Self-reports

30.

In an experiment, it is the group that is not exposed to the treatment contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.

a)

group of participants

b)

matched pairs group

c)

experimental group

d)

control group

31.

In an experiment, the _________________ variable is tested by the researcher to observe its effect(s) on the _________________ variable.

a)

explanatory; response

b)

first; second

c)

dependent; independent

d)

research; response

32.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertalizers, equal light, and equal water. What type of variable is the water?

a)

Dependent

b)

Independent

c)

Control

33.

Mr. Badalof is conducting an experiment about his students. He claims that different types of clothes have an impact on student test scores.

What is the explanatory variable in his experiment?

a)

Types of clothes

b)

Student test scores

c)

Mr. Badalof's jokes

d)

Mr. Badalof's haircut

34.

The parts of the experiment that must be kept the same.

a)

control

b)

Response variable

c)

Dependent variable

d)

Conclusion

35.

A 100 year old women named Mary claims that diet reduces disease. What is the dependent variable (thing she is measuring) in her experiment?

a)

Diet

b)

Reduces

c)

Exercise

d)

Disease

Data Collection & Experimental Design AP Statistics

Total questions: 35

Worksheet time: 49mins

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