Chi-squared test

Question 1

What would the null hypothesis be for a chi squared test be?

Answer 1

There is no signifiant difference between the expected and observed results

Question 2

When do you use a chi squared test?

Answer 2

When using categorical data

When comparing observed and expected results

Question 3

How do you calculate the expected number of offspring?

Answer 3

Total number of offspring/ratio total x predicted ratio

Question 4

How do you calculate degrees of freedom?

Answer 4

Number of classes minus one

Question 5

What probability level do you use?

Answer 5

0.05

Question 6

What happens if your calculated chi squared value is more than or equal to the critical value?

Answer 6

reject the null hypothesis
Something other than chance is causing the difference
There is a significant difference in the results

Question 7

What happens if your calculated chi squared value is smaller than the critical value?

Answer 7

accept the null hypothesis
Chance is more than likely causing the results
No significant difference in the observed and expected results
This is what you want