STATS 250 Lecture Notes - Lecture 11: Box Plot, Pooled Variance, Variance
22 views7 pages
jessieho and 37662 others unlocked
49
STATS 250 Full Course Notes
Verified Note
49 documents
Document Summary
Quiz is focused on homework 4 and 5. For exam 2, we would need to be able to differentiate when to use the population proportion formulas or population mean. One mean, mean of differences, differences between means (topics to look at on problem roulette) Testing about a population mean difference mu(d) is just a one-sample t-test on the differences. For ho and ha, you always make an estimate for populations or populations you want to learn about. Here it is the population of all the differences (every single person before and after score was recorded and their differences were calculated and recorded and put into a basket) The equal always goes on the ho and is always a statement of no affect, no change on average, etc. If you are looking on improvement, you have to look at how the differences were defined.