Psychology / Psych 0067 · Atom · ~20 seconds
The Correlation Coefficient
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The correlation coefficient, r, runs from −1.00 to +1.00, where the sign gives direction and the absolute value gives strength.
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An r of −0.85 between hours of screen time and hours of sleep is strong, and it is negative.
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A negative correlation is not a weak one. Sign and strength are two separate readings of the same number.