Independent Variable
Ordinal Data
Correlational Research
Types of Univariate Research
Interval Data
Type 1 Error
Type 2 Error
Nominal Data
Dependent Variable
Ratio Data
Bell Shaped Curve
When you say the null hypothesis is false when it is actually true. “False Alarm!”
variable being manipulated by the experimenter
number used to convey rank. Examples: winner of race; top-40; class ranks.
Failing to reject the null hypothesis when, in fact, it is false. A “missed opportunity”
number is used to label or identify. Examples: jersey number; male/female; social security number
1. Characterize the study sample 2. Characterize a problem or phenomenon 3. Document incidence/prevalence 4. Establish norms 5. Document developmental phenomena 6. Document case studies
constant intervals with an absolute zero. Examples: height; weight; Kelvin scale.
Equal intervals between data in a set. Examples: temperature; GRE scores; IQ scores.
variable that changes as a result of manipulation
Aims to demonstrate/measure relationships (not experimental)
