FInal Flashcards
what is the formula for confidence interval
x bar + or minus (z sub critical value)(sigma xbar)
what is single sample t test confidence interval formula
x bar + or - (2 tailed critical value) (S sub x bar)
what is the formula for independent samples t-test confidence interval
(x bar sub 1 - x bar sub 2) + or - (t sub critical value) (S x bar sub 1 - x bar sub 2
what is the formula for dependent samples t test confidence interval
D bar + or - t sub critical value (S sub D bar)
what is cohens d for
size of effect IV had on DV
what is cohens d formula z test
d = x bar - null population over sigma
what is cohens d formula single sample t test and what is the formula for ass hat in single sample t test
d = x bar - null population over ass hat
what is cohens d formula for independent samples t test and what is its ass hat formula
d= x bar sub 1 - x bar sub 2 divided by ass hat
ass hat = (all square rooted) small n (S sub x bar sub 1 - x bar sub 2)
what is cohens d formula for dependent samples t test and what is its asshat formula
d= x bar sub 1 - x bar sub 2 divided by asshat
ass hat = (all square rooted) capital N(S sub d bar)
what is the formula for effect size for F ratio in a one way ANOVA
eta squared (long n) = SSbetween divided by SStotal
what is the formula for effect size for F ratio in a factorial ANOVA
eta squared sub p= SSeffect divided by SSeffect + SSwithin
what is the pearson correlation coefficient formula
r= N the sum of XY - (the sum of x) (the sum of Y) divided by (all square rooted) [N the sum of x squared - (the sum of X) squared] [ N the sum of Y squared - (the sum of Y) squared]
what is the formula for linear regression
Y hat =bX+a
what is spearmans correlation formula
spearmans p= 1- [6the sum of D squared divided by N(N squared-1)]
what is a non parametric test
experiments that do not require population to make assumptions
what is the chi square goodness of fit test for a single independent value formula
chi square = sum of (f sub o - f sub e) squared divided by f sub e
what is the formula for f sub e goodness of fit test
f sub e = total divided by number of categories
what is the chi square test of independence for two independent variables
chi square = sum of (f sub o - f sub e) squared divided by f sub e
what is the formula for f sub e in a chi squared test of independence
f sub e = (row total)(column total) divided by overall total
what is the non parametric alt to independent samples t test
Mann whitney U
what is the formula for the mann whitney U test
U sub CND 1 = (n sub CND1) (n sub CND 2)+ n sub CND 1( n sub CND 1 +1) divided by 2 - sum of rank of CND 1
in mann whitney u the u must be ____ to be considered significant
smaller than the cv
what is the formula for the kruskal wallis test
h= 12 divided by N(N+1) (The sum of Tsub i squared divided by n sub i) -3(N+1)
what is the formula for the freidman test
chi square sub r = 12 divided by (nk)(k+1) (The sum of r sub i squared) -3n(k+1)
