Genetics Lecture 8 Flashcards
1
Q
What is the Chi squared test used for?
A
Ratios observed may not always match the expected. This test is used to assess the significance of the difference.
2
Q
What is the null hypothesis?
A
Observed ratios = expected ratios
3
Q
What determines whether the null hypothesis should be accepted or rejected?
A
Goodness of fit
4
Q
Define the equation for Chi.
A
(sum ( d ) ^ 2 ) / e d = o - e d = deviation o = observed e = expected
5
Q
When the Chi value is obtained, what is done with it?
A
It is compared to a probability chart.
If the table value is higher than the obtained value, the null hypothesis is accepted.
