chi square tests- gof, toi, homogeneity

Question 1

Goodness of fit

Answer 1

1 categorical variable from 1 population

Question 2

Homogeneity

Answer 2

1 categorical variable with 2 groups/samples

Question 3

Test of Independence

Answer 3

2 categorical variables with 1 sample

Question 4

state: chi square test for goodness of fit/independence/homogeneity

Question 5

GOF df

Answer 5

(#of categories -1)

Question 6

Test of Independence df

Answer 6

(# of rows-1)(# of categories -1)

Question 7

Homogeneity df

Answer 7

(# of rows-1)(# of categories-1)

Question 8

independence-

Answer 8

are the 2 categorical variables associated with each other in the population; are they indy of each other or no (ho- indy, ha- not indy)

Question 9

homogeneity

Answer 9

do 2+ subgroups of a population share the same distribution of a single categorical variable

Question 10

GOF

Answer 10

tests ho that a categorical variable has a specified distribution in the pop of interest, the ha is that it doesn’t

Question 11

large counts- multiply total by percent prop of categories ex. 80(1/4) = 20, then apply

Question 12

random? Random Assignment or Randomized Experiment