If a result is "statistically significant" it

Is more extreme than chance would explain.

Confounding is caused by

a third variable that is tied to the explanatory variable and rv.

What is the control group?

A group that receives no treatment or an existing treatment

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

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

Nonresponse, Undercoverage, Poorly worded question

Mr. Nath can't decide whether to or not to keep wearing his cool hats. Which is not a convenience sample?

Conducting an SRS within his 4th period class

Which of the following is a NOT a valid concern about using a census?

We only want statistics, not parameters

Which of the following is FALSE?

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

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Collecting Data

15 termsStudBud Administration199 plays

Data collection methods, surveys and experiments.

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Questions 15

Answers

1
If a result is "statistically significant" it
Shows an association.
Requires statistics to understand.
Is a randomized experiment.
Is more extreme than chance would explain.
2
I experiment on dogs to see which food makes them behave best. Which is the experimental unit?
Dog
Type of food
Experimenter
Behavior level
3
Why should we rely on random sampling?
He is my good friend
Probability allows trustworthy inference
To eliminate bias
We should not rely on random sampling
4
Confounding is caused by
Having a control group
Those meddling kids
Response bias
a third variable that is tied to the explanatory variable and rv.
5
When you impose a treatment on volunteers this is a(n)
Cruel and unusual punishment
Observational Study
Experiment
Survey
6
What does it mean when an experiment is "double-blind"?
The experimenters are blind.
none of the other answers.
The results don't make sense.
There is a placebo group.
7
What is the control group?
The group that receives treatment
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
8
If I wanted to choose a random sample of jelly beans but the same number of each color I would
use a table of random digits
eat them
perform a simple random sample
perform a stratified random sample
9
An online survey asks if Iron Man or Ultron would win in a fight. This is an example of
convenience sample
voluntary response sample
simple random sample
stratified random sample
10
What is the best way to assign treatments?
Stratified random sample
Simple Random Sample
Control group
Random assignment
11
I conduct phone interview to ask about Spiderman however 30 of 40 people don't pick up. This
Response bias
Nonresponse
Undercoverage
Poorly worded question
12
Mr. Nath can't decide whether to or not to keep wearing his cool hats. Which is not a convenience sample?
Asking the members of the Hat Appreciation Club
Asking his family
Asking the first 12 students who arrive to school one day
Conducting an SRS within his 4th period class
13
You can establish causation when
you conduct a prospective study.
you conduct an experiment.
you give a sample survey.
you conduct a retrospective study.
14
Which of the following is a NOT a valid concern about using a census?
We only want statistics, not parameters
It is time-consuming and expensive.
A census often suffers from undercoverage bias
A census is often undoable.
15
Which of the following is FALSE?
Samples are used to make inferences about a Population.
A Population is used to make an inference about a Sample.
A Sample should be chosen at random to avoid bias.
A Sample is part of a Population.

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