3600pp12 - Extreme scores MODE Most frequent score Actual...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 12: Understanding Research Results: Scales of Measurement: Review Must have two levels 1. Nominal 2. Ordinal 3. Interval 4. Ratio Frequency Distribution Tells us how many participants chose a particular score A set of scores arranged in order Class Age Frequency 19 2 20 2 21 4 22 3 23 1 Frequency Polygon Histogram or Bar Graph Descriptive Statistics Used to describe data 68% of the people polled prefer one candidate for the office and 43% favor the other Measures of Central Tendency Indicate how participants scored overall and how much variability exist MEAN Statistical average of scores
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Value of EVERY score is used Interval and ratio data Extreme scores MEDIAN Middle score Ordinal data
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Extreme scores MODE Most frequent score Actual values not considered Nominal data Very simple description STANDARD DEVIATION Most commonly used Measures variability Scores near or far Approximates the average distance from the mean Types of Correlation Coefficients Pearson r Spearman rho (rs) Point-Biserial (rpb) Phi Coefficient (t ) Restriction of Range Lowers coefficient Regression Used for prediction Predictor Variable Criterion Variable Multiple Correlation Increases prediction accuracy Partial Correlation Correlation between a predictor and criterion without the influence of other predictors...
View Full Document

This note was uploaded on 11/16/2011 for the course PSYCH 3600 taught by Professor Whatley during the Fall '11 term at Valdosta State University .

Page1 / 3

3600pp12 - Extreme scores MODE Most frequent score Actual...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online