week 3 lec 1

Question 1

sum of squares vs variance vs standard deviation?

Question 2

variance vs covariane

Answer 2

remember this the secret to standard deviation i think

Question 3

what is correlation

Answer 3

pearson

Question 4

spearman rank correlation?

Answer 4

good for ranking

Question 5

linear regression

Question 6

R^2 equation

Answer 6

apparently its not predicted

Question 7

proportion of variance?

Answer 7

87% of data is explained by the predictor