Term
Central Limit Theorem (CLT) 

Definition
All averages of many samples will lead to a bell shaped curve. Taking samples of a parent population and plotting the frequency distribution of sample means. 


Term

Definition
Theoretical distributions that describe the relationship between population samples. Provides the information necessary for making inferences. Provides the information to predict where a sample is located in the population. 


Term
Standard normal disributions 

Definition
Bell shaped curve. Unseful to analyze models with normal distribution, unimodal and roughly symetric shapes. 


Term

Definition
Standerdized value measuring how far away from the mean a certain value is using standerd deviation as a ruler. A value that is 1.5 sd above the mean will have a zscore of 1.5. 


Term

Definition
NORMAL DISTRIBUTION
68% of the samples lie 1sd away from the mean
95% lie 2sd away from the mean
99.7% lie 3sd away from the mean 


Term

Definition
Explanatory variable (ex gender) as row variable, resopnse varible (alcohol consumtion as colum variable. 


Term

Definition

