Scatterplots n The concept of correlation can be demonstrated by using Research design and the systematic way the data are collected, ¨ Causality, or determining if a factor caused an observedĮffect, which is an important goal of science, is determined through That a change in one variable causes a change in another variable. n Just because two variables are correlated does not mean Predictor of freshman-year college grades). Using the values of a second variable (such as using SAT scores as a (whether a variable, such as skinfold thickneses, can be used as a measure ofĪnother variable, such as body fat), or predicting the value of one variable (such as height and weight taller people tend to be weigh more), evaluating validity n Correlation has many uses, such as identifying related characteristics ¨ The correlation coefficient ranges from -1.00 to +1.00.Ĭorrelation coefficients are interpreted by their magnitude and sign,ĭiscussed below. Variable changes? ¨ Correlation is measured by evaluating the extent to which theĭeviations from the mean in one variable correspond to the deviations from the The values of another variable? How much does one variable change as another n Correlation analysis allows us to ask questions such as: How much are the values of one variable associated with Variable can tell us something about the value of the other variable. If two variables are related, the value of one Correlation n Correlation is a value that tells us the degree to which two 105-117 Purpose n To discuss and demonstrate the concept and application of simpleīivariate correlation.
Reading n Vincent & Weir, Statistics in Kinesiology, 4th ed., ChapterĨ “Correlation and Bivariate Regression” pp.
Correlation Section 6.1 n This Topic has 2 Sections.
0 kommentar(er)
