chi squared

Question 1

what is the null hypothesis in a chi squared test?

Answer 1

there is no significant difference between observed and expected values

Question 2

how do you calculate the expected values?

Answer 2

using s ratio (from a cross or given)

find out the proportion of each characteristic

Question 3

steps for chi squared

Answer 3

o
e
o-e
(o-e)2
(o-e)2 / e
sum of this = x2

Question 4

degrees of freedom for chi squared

Answer 4

n-1

Question 5

what level is chi squared carried out at?

Answer 5

5%

Question 6

if chi squared value is greater than critical value

Answer 6

you REJECT the null hypothesis

there is a significant difference between observed and expected values at 5% level