chi-square analysis

Question 1

assumptions chi-mutually exclusive.

Answer 1

each group 1 cell= must be independent
mutually exclusive= individual can not simutanouly belonhg one than one cell because events do not occur simultaniously eg you toss a coin cannot be heads and tails

Question 2

assumptions chi-large enough expectant count

Answer 2

frequency each less than 20% of expected count 5 or greater .

Question 3

random selection

Answer 3

ensure represent population conduct multiple study like test- re test

Question 4

one way chi

Answer 4

one variable and several levels

Question 5

two way chi

Answer 5

two categorical variable

Question 6

assumptions- (observe)

Answer 6

observe frequency count and expected frequency.=n/k

total number divided number of v =MEAN?

Question 7

to decide statistic sig

Answer 7

difference between observed and expected frequency, square so n neg and divide by expercted value

Question 8

larger x2 mean

Answer 8

larger disprecency between observed and expected
-predict null.
if large accept to reject null as by chance

Question 9

formula of chi

Answer 9

x2=3(0-E)squared/E

Question 10

if broke assumptions

Answer 10

fisher exact if expectancy count less than 5

Question 11

if sig use phi-coefficient

Answer 11

0.10- small effect
0.30 medium
0.50 large