What is a population
An entire group of individuals
What is a sample
Smaller group chosen from a population to represent it
What is a parameter
Population
What is a statistic
Sample
What are discrete variables
Indivisable categories
What are continuous variables
Infinitely divisable unit
What is a nominal variable
Variable that can only be identified by name with no real way to order them “one over another”
What is an ordinal variable
Variable that tells direction of difference
What is an interval variable
Variable of ordered equal size category
What is a ratio variable
Variable where zero equals none of the variable and it is clearly identifyable the direction and magnitude of differences
What is a correlational study
Study that determines the strength and direction of the relationship between two variables
What is an experimental study
Study that examines the relationship between two or more variables by changing one variable and observing the effects on the other variable
What is a non-experimental study
Study that compares groups of scores without using a manipulated variable
What type of studies have independent and dependent variables
Experimental and non-experimental studeis
What is an independent variable
Variable that effects dependent variable
What is a dependent variable
Variable that is effected by independent variable
What types of studies can identify causation
Experimental Study
Why can’t studies that don’t manipulate a variable determine causality
There may be ouside variables that cause the results
