Correlations

• A correlation is a non experimental Method to look for a relationship between two variables
• To find a correlation,both Sets of data should be plotted against eachother on a scattergram
• This is a strong positive correlation

  
• This is a strong negative correlation

  
• This is a weak positive correlation

  
• This is a weak negative correlation

  
• A positive correlation is when one variable increases as the other increases
• A negative correlation is when one variable decreases as the other increases
• A coefficient is a number representing the strength of a correlation between two variables
• A coefficient with a minus in front of it means that the correlation is negative
• A coefficient is always between 1 and -1
• The closer to zero a coefficient is, the weaker the correlation is
• Correlation does not mean causation