z distribution

Question 1

what does a z disturbution do?

Answer 1

Makes it standardised

Question 2

Calculate standard error of mean

Answer 2

SD / squarert N

Question 3

How does sample size effect SE

Answer 3

Smaller N = larger SE which is bad

Question 4

Model summerises outcome

Answer 4

Outcome = parameter + error

Question 5

Model predicts outcome

Answer 5

Outcome = (bXi) + error (Predictor)

Question 6

Test statistic

Answer 6

variance explained by model / variance not explained by model OR effect / error