STATS TESTS Flashcards
1
Q
If SD bars overlap then …
A
There is no significant difference - could be due to chance
2
Q
When do you use Spearman’s rank?
A
When investigating if there is a significant correlation between two variables
3
Q
Null hypothesis for spearman’s rank?
A
No significant correlation between x and y
4
Q
Closer the spearman’s rank coefficient is to 0 ?
A
The weaker the correlation
1 = perfect positive correlation
-1 = perfect negative correlation
5
Q
How to calculate the critical value?
A
Look at the number of pairs of measurements
6
Q
When to use the student’s T test?
A
Used to compare 2 sets of data
Used to find a significant difference between two means.
7
Q
If value is greater than critical value?
A
Reject null hypothesis
95% sure there is a significant difference (when P = 0.05)
