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AP Statistics Conditions Quiz
AP Statistics Conditions Quiz
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A useful review quiz for takers of the AP Statistics exam #apstatistics #apstats
Flashcards
11 cards
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Questions
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Answers
1
In which of these scenarios is a discussion of the sample size
not
necessary for a t-test?
When you see the sample distribution is approx. normal
When the sampling distribution of means is approx. normal
When you see the sample distribution is skewed
When you know the population is normally distributed
2
What condition satisfies the "Large Enough Sample" assumption for a z-test?
n > 40
np > 10; nq > 10
All exp > 5
n < 10N
3
The "independence assumption" for a 2-sample test refers to which of the following?
Data vary independently
Data were selected independently
Statistics vary independently
Groups vary independently
4
For a 2-sample t-test, which of the following
must
be true?
Both groups' sample sizes > 40
Populations were normally distributed
Groups are independent from each other
Data are paired by subject
5
How do you find expected cell frequencies for a χ
2
test for Homogeneity?
np1, np2, ...
(Row Tot)(Col Tot) ÷ (Grand Tot)
From running the χ2 test on calc
Cell Value ÷ Grand Total
6
In which situation is a check of conditions necessary?
Calculating a probability with the t-distribution
Creating a confidence interval
Calculating a probability with the normal model
Conducting a hypothesis test
7
In which of these scenarios is a check for normality of the Sampling Distribution Model needed?
1-sample t-test
1-proportion z-test
All of these
2-proportion z-interval
8
Which of these is
not
a required condition to check for a regression slope t-interval?
Sample size > 40
Scatterplot is linear
Residuals are normally distributed
Residuals show equal variance
9
Which of these is a condition that should be checked for *any* test?
Expected Cell Frequency Condition
Random Condition
Success/Failure Condition
10% Condition
10
The 10% condition is meant as a check for what often violated assumption?
Sample is large enough to apply normal model to SDM
Distribution of data in sample is approximately normal
Each member of the sample can be considered independent
Sample was randomly selected
11
Which of these conditions is necessary for a 1 proportion z-interval?
np > 10; nq > 10
nppool > 10; nqpool > 10
np-hat > 10; nq-hat > 10
n > 40
