In which of these scenarios is a discussion of the sample size not necessary for a t-test?

When you know the population is normally distributed

For a 2-sample t-test, which of the following must be true?

Groups are independent from each other

In which situation is a check of conditions necessary?

Creating a confidence interval, Conducting a hypothesis test

How do you find expected cell frequencies for a χ2 test for Homogeneity?

(Row Tot)(Col Tot) ÷ (Grand Tot), From running the χ2 test on calc

The 10% condition is meant as a check for what often violated assumption?

Each member of the sample can be considered independent

studbud

Duplicate of AP Statistics Conditions Quiz

11 termsStudBud Administration

A useful review quiz for takers of the AP Statistics exam #apstatistics #apstats

Flashcards11 cardsFPractice quizPHost liveL

Questions 11

Answers

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

Duplicate of AP Statistics Conditions Quiz Flashcards | StudBud