degrees of freedom

Question 1

Kolmogorov-smirnoff test

Answer 1

n

n=no. of samples

Question 2

F test (homogeneity of variance)

Answer 2

N(1) -1 and N(2)-1

n=sample size

Question 3

poisson (chi squared)

Answer 3

n-2

n=no. of categories

Question 4

chi-squared of homogeneity

Answer 4

n-1

n=no. of samples

Question 5

chi-squared goodness of fit

Answer 5

n-1

n=no. of samples

Question 6

chi-squared independence/association

Answer 6

(r-1)(c-1)
(r=no. of rows)
(c=no. of categories)

Question 7

one sample t-test

compare sample mean with a known population mean

Answer 7

n-1

n=sample size

Question 8

unpaired 2 sample t-test

comparing two means

Answer 8

N(1) + N(2) - 2

n=sample size

Question 9

z test

Answer 9

1.96

Question 10

paired t-test

Answer 10

n-1

n=sample size, i.e. no. of pairs

Question 11

Mann Whitney

Answer 11

N(1) and N(2)

n=sample size

Question 12

kruskall wallace

Answer 12

n-1

n=sample size

Question 13

wilcoxon

Answer 13

n

no. of pairs

Question 14

one way ANOVA

Answer 14

(a-1) , (n-a)
(a=no. of samples)
(n=total sample size)

Question 15

two way ANOVA

Answer 15

factor 1: r-1
factor 2:c-1
interaction: (r-1)(c-1)
error: N-(r x c)

Question 16

linear regression

Answer 16

factor: 1
error: n-2
(n=sample size)