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# Week_12_slides_with_graphics - Welcome back to"Name That...

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Types of variables Levels of Measurement Independent variable Categorical (nominal or ordinal) Categorical (two independent groups) Categorical (two dependent groups) Categorical (more than two groups) Continuous (ratio or interval) Dependent variable Categorical (nominal or ordinal) Continuous (Ratio or interval) Continuous (Ratio or interval) Continuous (Ratio or interval) Continuous (ratio or interval) Statistical procedure: _______? ______? ______? ______? Correlation (or Pearson r ) Welcome back to “Name That Statistic” 1 ScWk 242 Week 12 Correlation

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What is “Correlation”? The Pearson r “correlation coefficient” is a summary statistic that indicates both the strength and direction of the relationship between two variables It has a value of between 1 and +1 Values less than zero (e.g 0.8) indicate a negative correlation Values greater than zero (e.g. +0.8) indicate a positive correlation 2 ScWk 242 Week 12 Correlation
Examples of correlational research hypotheses The number of outpatient therapy sessions utilized is

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## This note was uploaded on 09/08/2010 for the course SCWK 242 at San Jose State.

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Week_12_slides_with_graphics - Welcome back to"Name That...

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