If a result is "statistically significant" it

Probably didn't happen by chance.

You can NOT establish causation when

Larger values are associated with weaker responses

If I wanted to choose a random sample of jelly beans but the same number of each color I would

perform a stratified random sample

Mr. Zachos can't decide whether to shave his beard. Which is not a convenience sample?

Conducting an SRS within his F period class

Which of the following is a good reason NOT to use a census?

It measures results from the entire population

What is the control group?

A group that receives no treatment or an existing treatment

I conduct phone interview to ask about Spiderman however 30 of 40 people don't pick up. This

Poorly worded question, Undercoverage, Nonresponse

Why should we rely on random sampling?

To eliminate bias, Probability allows trustworthy inference

Which of the following is FALSE?

A Population is used to make an inference about a Sample.

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Duplicate of AP Statistics Chapter 4 Practice

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To be used for studying Chapter 4 of AP Statistics Text Book #statistics #apstatistics #math #practice

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Questions 15

Answers

1
What is the best way to choose experimental units?
Random assignment
Control group
Stratified random sample
Simple Random Sample
2
If a result is "statistically significant" it
Probably didn't happen by chance.
Shows an association.
Is a randomized experiment.
Requires statistics to understand.
3
You can NOT establish causation when
The association is consistent
The cause precedes the effect in time
Larger values are associated with weaker responses
The association is strong
4
If I wanted to choose a random sample of jelly beans but the same number of each color I would
eat them
use a table of random digits
perform a simple random sample
perform a stratified random sample
5
Mr. Zachos can't decide whether to shave his beard. Which is not a convenience sample?
Asking the members of the Beard Appreciation Club
Asking his family
Conducting an SRS within his F period class
Asking the first 12 students who arrive to school one day
6
When you impose a treatment on a sample this is a(n)
Observational Study
Experiment
7
An online survey asks if Iron Man or Ultron would win in a fight. This is an example of
convenience sample
stratified random sample
simple random sample
voluntary response sample
8
I experiment on dogs to see which food makes them behave best. Which is the experimental unit?
Dog
Experimenter
Behavior level
Type of food
9
Which of the following is a good reason NOT to use a census?
In destructive sampling, all the results would be the same
There is no reason to not use a census.
Nobody would participate in a Census.
It measures results from the entire population
10
Confounding is caused by
Response bias
Having a control group
Lurking variables
Those meddling kids
11
What is the control group?
A method for keeping track of results in an experiment
A group that receives no treatment or an existing treatment
The group that gives the treatment
The group that receives treatment
12
What does it mean when an experiment is "double-blind"?
There is a placebo group.
The results don't make sense.
none of the other answers.
The experimenters are blind.
13
I conduct phone interview to ask about Spiderman however 30 of 40 people don't pick up. This
Poorly worded question
Undercoverage
Nonresponse
Response bias
14
Why should we rely on random sampling?
To eliminate bias
Probability allows trustworthy inference
We should not rely on random sampling
He is my good friend
15
Which of the following is FALSE?
A Sample is part of a Population.
A Sample should be chosen at random to avoid bias.
A Population is used to make an inference about a Sample.
Samples are used to make inferences about a Population.

Duplicate of AP Statistics Chapter 4 Practice Flashcards | StudBud