Fundamentals
Can also be referred to as an "average"
What is the mean?
The hypothesis that there is no significant difference between variables.
What is the null hypothesis?
Fits a bell curve
What is a normal distribution?
Chart showing box and whiskers
What is a boxplot?
Quantitative
What is numerical data
The difference between the largest and smallest values in a data set
What is the Range?
A statement contradicting the null hypothesis
Alternative hypothesis?
When the P value is < alpha
What is Statistical Significance
A bar graph that shows frequency
What is a Histogram?
Bias that occurs when individuals may choose if they want to participate in a study
What is Voluntary Response Bias?
Most frequent value in a data set
What is the mode?
Hypothesis test used when n<30
What is a T-Test
When the P Value is > alpha
What is Reject the null hypothesis?
Graph presented with "stems and leaves"
What is a stemplot?
Expectations affect the results of a study
What is the placebo effect?
Middle of a distribution
What is the median?
Hypothesis test for a single sample when population SD is unknown
What is a Z-Test?
A sample where every value has an equal chance of being selected
What is a random sample
The line over a histogram
What is a density curve?
Two individuals are matched and compared in a study
What is matched pairs design?
A numerical measurement that describes some characteristic of a population.
What is the parameter?
Test to evaluate if two variables are independent
What is Chi-Squared?
False positive
What is type I error
Line graph showing cumulative frequencies
What is an ogive
One variable influences changes in another
What is causation?