Proportions
What does p represent?
What does normality/CLT condition ensure?
That data is approximately normal or the sample size is large enough.
These are the values you compare your observed counts to.
Expected Counts
A confidence interval
What does μ represent?
Population mean
What does x-bar represent?
Sample mean
Which test is used to find differences in 2 variables?
Homogenuity
True or False. Is it true that you reject the null when 0 is in the interval?
False. You fail to reject the null.
What type of data do proportion problems use?
What test is used to compare 2 independent sample means?
2 Sample T Test
What is the formula for the chi-squared (x^2) Goodness of Fit Test?
(Observed-Expected)^2/ Expected
When the sample size increases, what happens to the width of the confidence interval>
It gets narrower.
What is the null hypothesis equal to in a 1 Proportion Z Test?
Population proportion.
This test is used to compare a sample mean to a known value when the population standard deviation is unknown?
1 Sample T Test
What formula do you use to find Degrees of Freedom in a Linear Regression Test?
n-2
It gets wider.
What test is used to compared 2 population proportions?
What type of test is used when comparing paired data?
Paired T-Test
When the correlation coefficient in a linear regression test is closer to 1 than 0, what does it suggest>
It suggest that the slope of the LSRL is strong, linear, and positive.
What is the critical value based on?
The confidence level