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5 Cards in this Set

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one-way ANOVA
test differences between 3 or more different groups.
Example: Annie Alcoholic wants to know which alcohol she should drink while she studies statistics. So, she gives gin to one group, vodka to another, and beer to another. Then, she tests their memory and runs a one-way anova
merge anova and regression. Control for extraneous factors. Example: Now Annie Alcoholic wants to be sure it isn't just a difference in her groups. She wants to account for more of the variance between them. So, she will give them a test of memory after giving them the booze, but she will also look at their last semester stats grades and run an ANCOVA.
An ANOVA with several dependent variables.
Ex: Annie Alcoholic decided she doesn't just need to remember the material, she needs to do it quickly. So, she gives the three groups 3 different alcohols (IVs) and measures their memory and psychomotor speed (DV's)
Tests differences between groups on two categorical or qualitative variables.
Ex: A marketing firm wants to know if there is a preference for different colors of chia-pets based on income level. Set up a table with the measured numbers to see if there is a difference.
What happens when you raise/lower a predictor cutoff?
False Neg| True Pos
True Neg | False Pos
EX: what would happen if the predictor cutoff was raised from a score of 30 to a score of 50?
The line would move to the right, shrinking true and false positives and raising the chance of true and false negatives.