Chi Squared Test Flashcards
1
Q
What is it
A
A statistical test that allows us to calculate if 1 result is significantly different from another
2
Q
When is chi squared used
A
When data is a frequency (how often)
3
Q
What does null hypothesis state
A
There is no significant difference between observed + expected results
4
Q
How is chi squared used in genetics
A
To see if the frequency of phenotypes shown in the offspring is significantly different to mendel’s ratio
5
Q
How do you determine if data is significant or not
A
Data must be compared to standard critical values
6
Q
When do we have to accept the null hypothesis
A
If the chi-squared value is less than the critical value
7
Q
Equation
A
X2 = total (O-E)2/E
