How to calculate the correlation coefficient

    • [DOC File]Notes: Mean, Variance, Standard Deviation, Covariance ...

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      Calculate the risk (standard deviation) of the following two-security portfolio if the correlation coefficient between the two securities is equal to 0.5. Variance Weight (in the portfolio) Security A 10 0.3

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    • [DOC File]Statistical Analysis of Medical Data: Correlation and ...

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      To find the sample correlation coefficient… Divide the sample covariance by (sample s.d. X * sample s.d. Y) = 100/(5*20) = 100/100 = 1. Keep In Mind. The highlighted values are the totals. Never get the sum of (Xi-X bar) or the sum of (Yi-Y bar). The sum of the deviation from the mean will . ALWAYS . …

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    • [DOC File]Bivariate Correlation, SPSS

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      Calculate the linear correlation coefficient for the data below. x: 0; 2; 9; 6; 4; 3; 5; 7; 8; 1; y. 17. 12. 0. 5. 9. 10. 7. 2. 1. 14-0.995 B) -0.671 C) -0.778 D) -0.885. A manager wishes to determine whether there is a relationship between the number of years her sales representatives have been with the company and their average monthly sales ...

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    • [DOC File]Correlation and Regression

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      To calculate correlation coefficient statistics click Analyze > Correlate > Bivariate (To compute sums of squares click the Options button on the Bivariate Correlations dialogue box and check the "Cross-product deviations and covariances" box.)

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    • Coefficient of Determination (R Squared): Definition, Calculation - S…

      Correlation Coefficient WorksheetName: Calculator steps for creating a scatter plot: Stat. Edit – put x’s in L1 and y’s in L1. 2nd y = Choose first type of graph. Calculator steps for finding “r” and graphing: Stat. Calc #4 (LinReg) Vars. Y-vars. Y1. Enter. Enter. Once you have written the r value written down, press zoom 9 to graph ...

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    • [DOCX File]CORRELATION ACTIVITIES

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      Calculate the correlation coefficient using CORREL pre-defined function. To the right of the obtained value, interpret the value of R in terms of degree and direction of association. To answer this question, represent graphically the relation between Total cholesterol (OX) and …

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    • [DOC File]CORRELATION ANALYSIS

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      Therefore, the corrected correlation coefficient is 0.3. Thus in this case, the original value of correlation coefficient is not affected. Example 20. A computer while calculating correlation coefficient between two variables X and Y from 25 pairs of observations obtained the following results.

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    • [DOC File]Example 18 - Yola

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      The linear regression function on a calculator will calculate the correlation coefficient for you. Make sure the calculator’s diagnostic function is turned on and find “r” the correlation coefficient. CATALOG (above zero) → Diagnostic On→ enter (twice)…the screen should say DONE

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    • [DOCX File]Correlation Coefficient Worksheet

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      Numerically, we can calculate a correlation coefficient and a regression equation. Correlation. The Pearson correlation coefficient, r, measures the . strength. and the . direction. of a straight-line relationship. •The . strength. of the relationship is determined by the …

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    • Chapter 7

      Phi Coefficient. The correlation between two dichotomous variables is know as the phi coefficient. Use SPSS to compute that statistic for the relationship between having social problems and dropping out of school. To test the null hypothesis that phi is zero in the population, we need to …

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