Statistics Flashcards
1
Q
What are the 3 statistical tests?
A
The chi squared test
Students t test
Correlation coeffecient
2
Q
What is an example of a correlation coefficient test?
A
Spearmans rank correlation coefficient
3
Q
What is a null hypothesis?
A
A hypothesis that says there is no statistical significance between the two variables. It is usually the hypothesis a researcher will try to disprove
4
Q
How do you complete a spearmans rank test?
A
State the null hypothesis
Convert the data into ranks (smallest to largest)
Calculate the correlation coefficient
5
Q
What do you do when two or more observations are equal?
A
Average rank
6
Q
How do you calculate the correlation coefficient?
A
R= 1- 6Ed^2 / n(n^2-1)
E= sum of
D= difference between ranks
N= number of samples
