CALCULATING CORRELATION COEFFICIENT
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The video demonstrates how to calculate correlation and covariance between two variables, using various formulas and problems. It includes examples where the correlation coefficient and covariance are computed, alongside relevant statistics such as variance and standard deviation. Viewers are encouraged to stay engaged throughout the video for comprehensive understanding.
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CALCULATING CORRELATION COEFFICIENT
- 1. CORRELATION GRADE 11 MATH COLLEGE MATH r 𝜚
- 2. PREVIEW: THIS VIDEO ILLUSTRATES THE METHOD OF CALCULATING CORRELATION. THE METHOD OF CALCULATING COVARIANCE IS ALSO DISCUSSED. DIFFERENT TYPES OF PROBLEMS USING DIFFERENT FORMULAE ARE DISCUSSED. SO STAY RIGHT THROUGH THE ENTIRE VIDEO!
- 3. Correlation is used to measure the degree of variations in 2variables. We first define Covariance between 2 variables x and y
- 4. Karl Pearson’ s coefficient of correlation
- 7. r has a moderate degree of negative correlation. If r has a low degree of negative correlation.
- 9. Let u =x-A, v = y-B
- 10. 1) Find r if cov(x,y)=-16.5 var(x)=2.25, Var(y) =144
- 11. 2) If n = 10, Find the correlation coefficient 𝑛 𝑥𝑦 − 𝑥 𝑦 𝑛 𝑥2 − ( 𝑥)2 𝑛 𝑦2 − ( 𝑦)2 226
- 13. Question 3 The coefficient of correlation between 2 variables x and y is 0.64. Their covariance is 16. Variance of x is 9. Find the standard deviation of y
- 14. Question 4 Find the covariance and coefficient of correlation between x and y when n=10
- 15. r =
- 16. Question 5 Calculate coefficient of correlation for the following
- 18. Question 6 Calculate Karl Pearson’s coefficient of correlation Sales in lakhs Expenditure in lakhs 18 23 20 27 27 28 20 28 21 29 29 30
- 19. Sales Expenditure u v uv 18 23 - 5 - 5 25 25 25 20 27 - 3 -1 3 9 1 27 28 4 0 0 16 0 20 28 - 3 0 0 9 0 21 29 -2 1 - 2 4 1 29 30 6 2 12 36 4
- 20. r =
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