Ch 1. PSYCH STATS

Correlational studies

2 variables 1 group

random sample

everyone has an equal chance of being selected

parameter

describes a population

Descriptive statistics

Used to summarize and organize raw scores

Inferential stats

Techniques used to study samples and make generalizations about a population

constructs

internal attributes/ characteristics

discrete variable

seperate invisible categories, WHOLE NUMEBRS

continous variable

infinite number of possiblites, two people can’t have the same number

measurement

assingning individuals to categories

Nominal scale

Set of categories that have different names, not quantitive

Ordinal scale

Consists of a set of categories that are organized in ordered sequence

Interval

has an arbitary zero point

ratio scale

zero point is meaningful value

Descriptive research

measuring one or more seperate variables for each individual, end goal is to describe individual variable

Experimental

cause and effect

participant variables

choosing random ppl

independent variable

manipulated by researcher

dependent variable

observed