'Y variable' diaporamas de présentation

Statistical Graphics for the SAS System

951 views • 64 slides

SAS: Proc GPLOT

970 views • 59 slides

Concepts and Variables

Concepts and Variables. 8/30/2012. Readings. Chapter 1 The Measurement of Concepts (14-23) (Pollock ) Chapter 2 Measuring and Describing Variables (Pollock) (pp.28-31). Opportunities to discuss course content. Office Hours For the Week. When Friday 11-1 Tuesday And by appointment.

481 views • 38 slides

Chapter Seven

Chapter Seven. The Correlation Coefficient. Understanding Correlational Research. Chapter 7 - 2. Correlation Coefficient. A correlation coefficient is the descriptive statistic that, in a single number, summarizes and describes the important characteristics of a relationship.

520 views • 35 slides

Multiple Regression Forecasts

304 views • 23 slides

Intro to Stats

Intro to Stats. Linear Regression . Linear Regression. Uses correlations Predicts value of one variable from the value of another ***computes UKNOWN outcomes from present, known outcomes If we know correlation between two variables and one value, we can predict other value

300 views • 18 slides

Intro to Stats

Intro to Stats. Reliability & Validity. Why discuss?. Limits all inferences that can be drawn from later tests If reliable and valid scale, can have confidence in findings If unreliable or invalid scale need to be very cautious. Measurement . Related measures & outcomes. Item 1. CONSTRUCT.

292 views • 18 slides

Intro to Stats

Intro to Stats. Correlations . Correlation Coefficients. Captures how the value of one variable changes when the value of the other changes Use it when: Test the relationship between variables Only two variables at a time. Correlation coefficient. Ranges from -1 to +1

259 views • 15 slides

MULTIPLE REGRESSION

MULTIPLE REGRESSION. is a method used to examine the relationship between one dependent variable Y and one or more independent variables X i . The regression parameters or coefficients b i in the regression equation

268 views • 13 slides

Pearson's correlation

Pearson's correlation. Diane S. Mendoza. It is named after Karl Pearson who developed the correlational method to do agricultural research. designated by the Greek letter rho (?)

410 views • 13 slides