a way to test a hypothesis in which the variance of a total population is unknown
What is a t test
100
The topic or issue that needs to be further investigated
What is a research problem
100
Predicting a particular direction of difference between populations
What is a directional hypothesis
100
it generates a a theory when existing theories do not address your problem or the participants you are trying to study
What is grounded theory
200
The measure of how spread out a set of scores are from the mean
What is variance
200
The narrow questions that come out of the research problem that need to be answered in the study
What is research question
200
Predicts an effect but does not predict a particular direction
What is nondirectional hypothesis
200
Use this design to describe trends or individual opinions
What is the best time to use survey design
300
The average amount that scores differ from the mean
What is standard deviation
300
Using both quantitative and qualitative data to create a research study
What is a mixed method design
300
Most state that you should use this non directional hypothesis test in all research studies
What is the best time to use a two tailed test
300
problems in drawing correct inferences about whether the covariant between presumed treatment and variable and the outcome reflects a causal relationship.
What is a threat to internal validity
400
the number of standard deviations the actual score is above or below the mean
What is a z score
400
A hypothesis that states that none of the factors or variables in a study are related
What is the null hypothesis
400
When you reject the null hypothesis and it is true.
What is a type 1 error
400
The variation in one variable contributes to the variation in another variable
What is covariation
500
When your significance level is too extreme and you do not reject the null hypothesis when you should have