Hypothesis Test for Difference of Means
Making inferences based on sample data. Confidence intervals. Margin of error. Hypothesis testing.
Hypothesis Test Comparing Population Proportions
Comparing Population Proportions 2
Difference of Sample Means Distribution
Clarification of Confidence Interval of Difference of Means
Confidence Interval of Difference of Means
Variance of Differences of Random Variables
Contingency Table Chi-Square Test
Type 1 Errors
Z-score practice
Analysis of Variance 2 - Calculating SSW and SSB (Total Sum of Squares Within and Between). avi
Introduction to the central limit theorem and the sampling distribution of the mean
Standard Error of the Mean (a. k. a. the standard deviation of the sampling distribution of the sample mean!)
Small Sample Hypothesis Test
Large Sample Proportion Hypothesis Testing
Analysis of Variance 1 - Calculating SST (Total Sum of Squares)
Z-statistics vs. T-statistics
The perfect logicians are at it again.
Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!
Confidence Interval Example
More Empirical Rule and Z-score practice