Correlation + Hypothesis Flashcards
What type of data can correlation analysis be done on
Quantitative data
What does a correlation coefficient measure?
The relationship
What values is the correlation coefficient between?
-1 and +1
What does a positive correlation show?
As one variable increases then so does the other variable
What does the perfect positive correlation have a coefficient of.
+1
What does a negative correlation show?
That there is a relationship. As one variable increases, the other variable decreases.
What is the coefficient of a perfect negative correlation?
-1
What does zero correlation show?
There is no clear relationship
What is the coefficient of zero correlation?
0
What are the advantages of correlation analysis?
Provides the means of looking at relationships between continuous variables
Useful way to conduct preliminary analysis on data
What are the disadvantages of correlation analysis?
Cannot show cause and effect relationship
Method used to measure either covariable may lack reliability and validity
Cannot show intervening variables
Explain the alternate hypothesis
There will be a significant correlation
Explain a null hypothesis
There will be no significant correlation
What do you have to add to the end of your sentence if you have a null hypothesis?
Any relationship is to chance
What does H1 mean
Alternate hypothesis
Where is H0
Null Hypothesis
