Z Score z Score for each for each value of value of zzy X х 6 3 0.536 -0.278 0.149 4 6 0.089 0.696 -0.062 -1 0 1.652 -1.253 2.070 0.663 2 1 -0.714 -0.928 1.473 1.671 2.461 0.371 6 0.536 0.199 -0.278 0.089 0.025 5.207 y3.857 4.286 s 3.200 s. = 3.078 Ea where n is What is the value of r, the correlation coefficient? 3. Remember, r= п-1 the number of points in the data set. (See table above.) r0.868 b. r=0.279 а. r0.835 с. d. r0.235

Given the equation of a regression line is y= -1.5x-1.8, what is the best predicted value for y given x= -3.0? Assume that the variables x and y have significant correlation.

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Last years Data Management class decided to see if there was a relationship between the score (out of 10) a student got on the two-variable stats quiz, and their score (out of 30) on the unit test. Use the given data to Quiz Score Test Score 6 8 10 9 10 20 26 29 26 30 a) Calculate the correlation coefficient. b) Perform a linear regression.

Suppose there is a significant correlation between variables. describe 2  instances in which it might be inappropriate to use the linear regression model for prediction

Suppose there is a significant correlation between two variables. Describe a case under which it might be inappropriate to use the linear regression equation for prediction.

How does linear regression differ from analysis of variance?

If a correlation isr= 0.00, then SP = 0 and the regression equation is O Ý =X +0 O Ý =X + X O Ý =0 + X O Ý =Ÿ + 0

What are the Standard Errors for Fixed Effects Regression?

The fish in my pond have mean length 12 inches and mean weight 5 pounds.  The correlation coefficient of length and weight is .8.  If the length of a particular randomly selected fish is reported to be 12 inches, then what should we predict for the weight of that fish using simple linear regression?