# A sample of 20 pairs of bivariate data has a linear correlation coefficient of r=0.65

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1. A sample of 20 pairs of bivariate data has a linear correlation coefficient of r=0.65. Determine if a linear equation exists or not. Use a 1% level of significance. Find the Decision points for levels 1% and 5 %
choices are +/- .537 +/.444 +/- .423 +/- .561
2.  A sample of 28 pairs of bivariate data has a linear correlation coefficient of r=-0.27 at a .02 level of significance, use a t test to determine if linear correlation exists or not. Give the hypothesis, find the critical values, Give the test statistic what is your conclusion
3.  Would you usually find an equation of a regression line if a linear correlation does not exist?
4. would you usually find an equation of a regression line if a linear correlation does exist?
• 7 years ago
A sample of 20 pairs of bivariate data has a linear correlation coefficient of r=0.65
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