19. correlations continued
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4 Terms
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what is a correlation coefficient
a number between -1 and +1 that represents the directions and strength of a relationship between co-variables
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strength of correlations
the closer to -1 or +1, the stronger the relationship between the co-variables
the closer to 0, the weaker the relationship
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signs and meaning
+0.5 is as strong as a relationship as -0.5 as the sign solely indicates the direction
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potential of weak correlations
coefficients that appear to indicate weak correlations can still be statistically significant as it depends on the size of the data set
Note 
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