Bruh, whats the t?
It is used when you have a known mean and you would like to see if that value is different from a known value.
What is a one sample t test?
You do this when you want to see if two nominal variables are related.
What is (Pearson's) Chi squared?
Eye color, gender, disease status, and college major are all examples of this type of variable.
What is categorical?
ANOVA is an abreviation for this.
What is Analysis of Variance?
We divide this value by the cross-product deviations to get Pearson's correlation coeffiencet.
What is covariance?
When sample sizes are above~100, the t distribution looks a lot like this.
What is a z distribution?
By looking at these you can see which cells are contributing to statistical significance
What are Standardized Residuals?
Is the square of standard deviation
What is variance?
We use ANOVA instead of multiple t-test because of this.
What is Family-wise alpha?
This is the rank order test we can conduct if the assumptions for correlation are not met.
What is Spearman's rho?
Is a correction applied to independent samples t test when there are unequal variances.
What is Welch's correction?
The corrections applied to chi squared if your expected values are small (less than 5).
What are Yate's and Fisher's Correction?
As sample size increases,and standard deviation remains the same, this decreases.
What is standard error of the mean?
We look at this to assess if we have equality of variance.
What is Levene's Test?
Pearson's Correlation coefficient has a range between these values.
What is -1 to +1?
Is the nonparametric test if the assumptions for independent t tests are not met.
What is Mann Whitney U test.
Visual Daily double
Draw the chi squared distribution compared to a normal distribution (assume 4 degrees of freedom).
In a normal distribution this proportion of observations are greater than 1.96 SD from the mean.
What is 2.5%?
Kruskal-Wallis is am example of this?
What is a non-parametric test? Or What is a "Rank Order Test"?
If we square Pearsons R it tells us this.
What is the proportion of the variance in Y that can be explained by changes in X?
These are the assumptions of paired samples t test
What is equal variance and normal distribution (approximately)?
Is the degrees of freedom for a chi squared analysis with 6 rows and six columns.
What is 25?
Says that the distribution of sample means is always normal, no matter what the population distribution is.
What is Central Limit Theorem?
This post-hoc test is commonly used but is often used incorrectly, and if it is used correctly is often too conservative (leading to more Type II errors)
What is Bonferroni's?
Visual Daily double
Draw a correlation that would likely give you a significant Pearson's r and a very high R2, but would be in appropriate to use those statistics to describe the relationship.