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[DOC File]BIVARIATE CORRELATION
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II. Pearson Correlation Coefficeint. Symbol: r. r can range from -1.0 to +1.0. Sign (+/-) indicates “direction” Value indicates “strength” Measures a “linear” relationship only (a) Direction . of relationship between X, Y. Positive (+r) = As X goes up, Y goes up. Negative (-r) = As X goes up, Y goes down (b) Strength. of a ...
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[DOC File]Correlation Analysis
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Pearson Product Moment Correlation Coefficient , aka, Pearson r. A numeric measure of strength and direction of linear relationship between paired score values. r is a standardized quantity. A standardized measure whose value is always between -1 and +1 inclusive. So it doesn’t matter what size numbers you’re correlating.
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[DOC File]Rule of Thumb for Interpreting the Size of a Correlation ...
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Matrix Showing Correlation Coefficients Appropriate for Scales of Measurement for Variable X and Variable Y. Variable X Nominal Ordinal Interval/Ratio Variable Y Nominal Phi (() C coefficient. Cramer’s V ( and ((Rank-biserial Point-biserial Ordinal Rank-biserial. Tetrachoric. Spearman (Biseral Interval/Ratio Point-biserial. Biserial rb Pearson r
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[DOC File]Measures of Correlation
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The Spearman rank correlation coefficient can be used to give an . R-estimate, and is a measure of monotone association that is used when the distribution of the data make Pearson's . correlation coefficient. undesirable or misleading. The Spearman rank correlation coefficient is defined by (1) where d is the difference in . statistical rank
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[DOC File]CHAPTER 17: SOCIAL STATISTICS
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10. Both lambda and Pearson's product moment correlation are based on guessing the mean. ANS: F. 11. Pearson's product moment correlation indicates how much of the variance in the dependent variable has been explained. ANS: T. 12. The general format for the regression line is y = a + b (X). The only observed quantity in this expression is X ...
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[DOC File]Correlation and Simple Regression
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Pearson’s Product-Moment Correlation Coefficient a) a measure of the direction and magnitude of the linear association of two interval/ratio scale variables that ranges from negative 1 (a perfect negative relationship) to positive 1 (a perfect positive relationship, with 0 indicating no relationship).
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[DOC File]STATISTICS 302:504-505
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PEARSON’S CORRELATION COEFFICIENT-measures the strength & direction of the . linear. relationship between X and Y-X and Y . must. be numerical variables. The formula looks like: where sx and sy are the standard deviations for x and y. Notice we are looking at how far each point deviates from the average X and Y value.
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[DOC File]Correlation Analysis
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3. Pearson Product Moment Correlation Coefficient, aka, Pearson r. A numeric measure of strength and direction of linear relationship between paired score values. Probably the most useful statistic you can compute. r is a standardized quantity. Its value is always between -1 and +1 inclusive, regardless of the original data.
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[DOC File]UNDERSTANDING THE PEARSON CORRELATION …
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Understanding the Pearson Correlation Coefficient (r) The Pearson product-moment correlation coefficient (r) assesses the degree that quantitative variables are linearly related in a sample. Each individual or case must have scores on two quantitative variables (i.e., continuous variables measured on the interval or ratio scales).
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[DOC File]Correlation and Regression
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The Pearson correlation coefficient, r, measures the . strength. and the . direction. of a straight-line relationship. •The . strength. of the relationship is determined by the closeness of the points to a straight line. •The . direction.
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Pearson correlation coefficient strength