psych 1.5 Statistical Analysis in Psychology

quantitative data

numbers facts and info that is not up for interpretation

qualitative data

word form, surveys, interviews -up for debate and interpretation

qualtiy adn characeristcs

descriptive statisticis

orgining and describes data without inferring it to a population

-frequency distribution table and polygon and histogram, pie chart

inferential statistics

statistical techniques that allow for researchers to make infrences about a population

mean

average

median

middle number

mode

frequently occuring

range

high -low

standard deviation

avergae distance from the mean

bimodal distribution

two modes causing distribution to have two peaks

percentile rank

location of score in a distribution expressed as the percentages of cases in teh data set

corrolation coefficent

closer the value is to 1, stronger the realtionship between two varibles

probability value

likelihood that the observed could have occurred just by chance