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

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

Conducting an SRS within his 4th period class

You can NOT establish causation when

Larger values are associated with weaker responses

Which of the following is FALSE?

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

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

Nonresponse, Poorly worded question, Undercoverage

If a result is "statistically significant" it

Probably didn't happen by chance.

What is the control group?

A group that receives no treatment or an existing treatment

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

It measures results from the entire population

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Chapter 4 Practice

15 termsStudBud Administration

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

Chapter 4 Practice Flashcards | StudBud