Corelations

• What does correlation illustrate?

  Strength and direction of an association between two or more co-variables
• Where are correlations plotted?

  Scattergram
• What are co-variables?

  Things being measured
• What are the three types of correlation?

  Positive correlation

  Negative correlation

  Zero correlation
• What type of correlation would this be?

  Positive

  
• What type of correlation would this be?

  Negative

  
• What type of correlation would this be?

  Zero

  
• What is a positive correlation?

  The more of co-variable Y the more of co-variable X
• What is a negative correlation?

  The more of co-variable Y the less of co-variable X
• What is a zero correlation?

  No relationship between co-variables
• What is the difference between a correlation and an experiment?

  No manipulation of one variable