This statistics video tutorial explains how to calculate the covariance between x and y. It also explains the significance of negative covariance vs positive covariance.

Correlation Coefficient:    • Correlation Coefficient  

Statistics - Video Lessons:
www.video-tutor.net/statistic.html

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Covariance and Correlation Coefficient:
   • How To Calculate The Correlation Coef...  

How To Calculate Covariance:
   • How To Calculate The Covariance Betwe...  

Least Squares Method:
   • Linear Regression Using Least Squares...  

Averages and Uncertainty:
   • Averages and Uncertainty Calculations  

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Introduction to Statistics:
   • Introduction to Statistics  

Mean, Median, Mode, & Range:
   • Mean, Median, Mode, and Range - How T...  

Arithmetic, Geometric, & Harmonic Mean:
   • Arithmetic Mean, Geometric Mean, Weig...  

Interquartile Range & Outliers:
   • How To Find The Interquartile Range &...  

Standard Deviation:
   • How To Calculate The Standard Deviation  

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Introduction to Probability:
   • Introduction to Probability, Basic Ov...  

Probability Formulas:
   • Probability Formulas, Symbols & Notat...  

Conditional Probability:
   • Conditional Probability With Venn Dia...  

Probability Tree Diagrams:
   • Probability Tree Diagrams  

Probability - Standard Normal Distributions:
   • Standard Normal Distribution Tables, ...