Week 8 Flashcards
Independent variable
What you change
Dependent variable
What you measure
Hypothesis
Expected results, deduced from theory or findings from other studies, with logical reasoning
Null hypothesis
Statement of no difference/no relationship, tested using statistics
What are descriptive statistics
Provide some valuable insight into our data
What are inferential statistics
Allows you to make predictions from that data
What are correlation statistics
Allows us to tell whether a relationship exists between 2 variables
What is a type 1 error?
False positive
Error made when one accepts something as true that is actually false
What is a type 2 error
False negative
Error made when one accepts something as false that is actually true
What is a P-value
P = Probability of error
Lower = Better
The lower the P value the more confident you can be that your finding is a “true” result
Yes
What makes a result significant?
If the P value is <0.05
What is a paired samples t-test
Used to test two sample means, collected from the same group on 2 separate occasions are significantly different from each other.
What is unpaired samples t-test
Allows us to test whether sample means from different populations are significantly different from each other.
What is an R value?
The coefficient of correlation is a quantitative value of the relationship between two or more variables
