4. simple regression Flashcards
(11 cards)
like correlation
anouther inferntional test about relation between variables
difference to correlation
regression analysis on one var can predict score on anouther
predictor varibale
similar to iv ( to help understand only) -THERE IS NO ACC IV
outcome varible
simialr to DV
assume
chnages on var (x) changes anouther (y)
therefore as assume constant relation= (linearty) we now that we can predict one var= if one goes up predict other one ect.
(RELATES TO LINEAR)
the assumption of constanct relation is summerised by
line of best fit
linear relation
positive= high x assosiated high y
negative high x assosiated with low y
perfect linear
-1-perfect neg linear rel
1-per pos linear rel
whats regression purpose
extention when 2 variables correlated
regression produces predict scores
predicted scores (variables)
outcome var= aim to predict (y)
predictor var- use to predict y (x)
( here use linear relation eg pos or neg)
outcome and predict var in axit
outcome=y axis
predictor= x axis