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Stats Unit 3 Review

Total questions: 35

Worksheet time: 39mins

Name
Class
Date
1.
Is the following question statistical or non-statistical? 
What are 6th graders' favorite flavors of ice cream? 
a)
Statistical
b)
Non-statistical 
2.
Is the following question statistical or non- statistical?
How tall are the students in our class?
a)
Statistical
b)
Non-Statistical
3.
Is the following question statistical or non-statistical? 
How many ceiling tiles are in our classroom?
a)
Statistical
b)
Non-Statistical
4.
Is the following question statistical or non statistical?
How many music videos has Taylor Swift made?
a)
Statistical
b)
Non-Statistical 
5.
Is the following question statistical or non-statistical? 
How many pairs of shoes does each student in your class have?
a)
Statistical
b)
Non-Statistical
6.
Is the following question statistical or non-statistical?
A sixth grader asks her guidance counselor: How many clubs and sports are open to sixth graders at this school?
a)
Statistical Question
b)
Non-Statistical Question
7.
Is the following question statistical or non-statistical?
How many words are there in this sentence?
a)
Statistical Question
b)
Non-Statistical Question
8.
Interview the first 30 students who enter the school in the morning. 
a)
simple random
b)
population
c)
systematic
d)
convenience
9.
A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.
a)
simple random
b)
representative
c)
Convenience
d)
Systematic 
10.
If every individual in a population has the same chance of being included in a sample, the sample is a(n) _________ sample.
a)
Biased Sample
b)
Convenience Sample
c)
Random Sample
d)
Stratified Sample
11.
Political webpages often allow readers to rate whether they strongly agree, agree, disagree, or strongly disagree with the President's decision on any given situation. This is a form of:
a)
Voluntary Response
b)
Quantitative Data
c)
Stratified Random Sampling
d)
Systematic Sampling
12.

To avoid working late, the quality control manager inspects the last 10 items produced that day.

a)

Convenience

b)

Random

c)

Self Selected

d)

Systematic

13.
Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 
a)
systematic
b)
simple random sample
c)
convenience
d)
volunteer response
14.
A sample should be
a)
representative of  only middle school students only
b)
a very large group
c)
representative of the population
d)
representative of people who volunteer
15.

Which type of bias occurs when some groups of populations are LEFT OUT of the selection process?

a)

Voluntary Response Bias

b)

Undercoverage Bias

c)

Leading Question Bias

d)

Social Desirability Bias

e)

Non Response Bias

16.
Source of bias that occurs when an individual chosen for the sample CAN'T be contacted or refuses to cooperate.
a)
Response Bias
b)
Undercoverage
c)
Nonresponse
d)
Voluntary Response
17.
Is diet or exercise effective in combating insomnia? Some believe that cutting out desserts can help alleviate the problem, while others recommend exercise. Forty volunteers suffering from insomnia agreed to participate in a month-long experiment. Half were randomly assigned to a special no-desserts diet; the others continued desserts as usual. Half of the people in each of these groups were randomly assigned to an exercise program, while the others did not exercise. Those who ate no desserts and engaged in exercise showed the most improvement. 
a)
Observational Study
b)
Experiment
18.
Researchers have linked an increase in the incidence of breast cancer in Italy to dioxin released by an industrial accident in 1976. The study identified 981 women who lived near the site of the industrial explosion and were under age 40 at the time. Fifteen of the women had developed breast cancer, at an unusually young average age of 45. Medical records showed that these women had heightened concentrations of dioxin in their blood, and that each 10-fold increase in dioxin level was associated with a doubling of the risk of breast cancer. (Science News, Aug. 3, 2002)
a)
Observational Study
b)
Experiment
19.
The May 4, 2000, issue of Science News reported that, contrary to popular belief, depressed individuals cry no more often in response to sad situations than nondepressed people. Researchers studied 23 men and 48 women with major depression, and 9 men and 24 women with no depression. They showed the subjects a sad film about a boy whose father has died, noting whether or not the subjects cried. Women cried more often than men, but there were no significant differences between the depressed and nondepressed groups. 
a)
Observational Study
b)
Experiment
20.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted (left out). 
a)
experimental group
b)
control group
c)
data
d)
variables
21.
An experiment is ________ when both the researcher and the subjects of the experiment do not know who received the treatment.
a)
blind
b)
double blind
c)
biased
d)
an observational study
22.

Observational studies do not allow us to draw cause and effect conclusions in our variables.

a)

True

b)

False

23.

How do we estimate the margin of error in our class?

a)

Multiply the standard deviation from a simulation by 2

b)

It is equal to the standard deviation from a simulation

c)

Find the mean and divide by the number of samples

24.
a)

We expect the true proportion of U.S. residents who rate the honesty and ethical standards of nurses as high or very high to be at most 0.024 from the estimate of 0.85.

.

b)

We expect the true sample of U.S. residents who rate the honesty and ethical standards of nurses as high or very high to be at most 0.024 from the estimate of 0.85.

c)

We expect the true proportion of U.S. residents who rate the honesty and ethical standards of nurses as high or very high to be at most 0.012 from the estimate of 0.85.

d)

We expect the true proportion of U.S. residents who rate the honesty and ethical standards of nurses as high or very high to be at most 0.024 from the estimate of 500.

25.
A television station is interested in predicting whether voters in its viewing area are in favor of federal funding for health care. It asks its viewers to phone in and indicate whether they support or are opposed to this. Of the 2241 viewers who phoned in, 1574 were opposed to federal funding for healthcare.
Referring to the information above, the viewers who phoned in are
a)
a voluntary response sample
b)
a convenience sample
c)
a census
d)
a population
26.
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
27.

Keith exposes half of his participants to an episode of a sitcom and half to an episode of a violent television show and then observes them for signs of aggressive behavior.

a)

Assignment

b)

Sampling

28.

Laurie picks 100 people to be in her study on the effects of listening to music while studying.

a)

Assignment

b)

Sampling

29.

Danny picks 100 students to try a new AP Psychology text and compares them with 100 other students who are using the old text.

a)

Assignment

b)

Sampling

30.

Chris puts 20 children in a drumming class and contrasts their drumming abilities with 20 children who have not had any drum instruction.

a)

Assignment

b)

Sampling

31.

Tracey chooses 1,000 people to be in her study about the personality of youngest children.

a)

Assignment

b)

Sampling

32.

A chance procedure is used to decide which of the available subjects will get which treatment.

a)

Random assignment

b)

Random sampling

c)

Random numbers

d)

Random events

33.

A chance procedure is used to select a sample from a list of all those in a population.

a)

Random assignment

b)

Random sampling

c)

Random numbers

d)

Random events

34.

Random assignment allows us to draw conclusions about CAUSE and Effect of the variables recorded.

a)

True

b)

False

35.

Random sampling allows us the draw conclusions from an experiment about the entire population from which the sample was chosen from.

a)

True

b)

False

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