Which of the following is FALSE?

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

You can NOT establish causation when

You have not conducted an experiment

Why should we rely on random sampling?

To eliminate bias, Probability allows trustworthy inference

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

We want to know if students support snow day assignments. Which is not a convenience sample?

Conducting an SRS within his 4th period class

What is the control group?

A group that receives no treatment or an existing treatment

If a result is "statistically significant" it

Probably didn't happen by chance.

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AP Statistics Chapter 4 Concepts

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To be used for studying Chapter 4 of AP Statistics Text Book

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Questions 15

Answers

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

AP Statistics Chapter 4 Concepts Flashcards | StudBud