Consider the following sample: x 9 6 7 5 8 y 19 14 16 12...

Consider the following sample:

x	9	6	7	5	8
y	19	14	16	12	15

Calculate the coefficient of correlation. Does correlation coefficient provide information about the relationship between x and y? Explain.
Find the linear regression line.
Find y, if x is 10.

Expert Solution

orchestra answered 1 year ago

Given the following data: x 2 8 5 12 9 y 6 11 7 14 10...

Given the following data: x 2 8 5 12 9 y 6 11 7 14 10 a) draw/graph a scatter plot. b) by hand, find the correlation coefficient r. c) by hand, find b0 and b1. d) write the regression equation.

Table: x: 6, 2, 15, 9, 12, 5, 8 y: 8, 9, 4, 7, 6, 9,...

Table: x: 6, 2, 15, 9, 12, 5, 8 y: 8, 9, 4, 7, 6, 9, 8 1) Make the scatter diagram. 2) Find the equation of the regression line using the formulas given in class. They must appear the intermediate steps of substitutions. Round the answers to three decimal places. 3) Find the correlation coefficient using the formulas given in class. Steps should appear intermediates of substitutions. Round the answer to three decimal places. 4) Find the value predicted...

Given the following data X 12 5 6 8 11 23 14 16 15 5 Y...

Given the following data X 12 5 6 8 11 23 14 16 15 5 Y 6 10 6 5 2 4 20 5 6 10 a. Is there a linear correlation between X and Y? Explain your answer. b. What is the regression question? c. If x value is 37, what is the y value?

x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7...

x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7 9 7 4 6 9 9 -5.48x + 0.17 5.48x + 0.17 -0.17x + 5.48 0.17x + 5.48

Consider the following data set with 10 observations: 6, 7, 7, 8, 10, 12, 14, 16,...

Consider the following data set with 10 observations: 6, 7, 7, 8, 10, 12, 14, 16, 18, X . Find 3 different values of X for which mean=median .

Use the sample space (5, 6, 7, 8, 9, 10, 11, 12, 13, 14) to find...

Use the sample space (5, 6, 7, 8, 9, 10, 11, 12, 13, 14) to find the probability for a random selected a) P(integer) b) P(less than 10 | less than 13) c) P(greater than 8 | less than 11) d) P(greater than 7 | greater 12)

Periods 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% 12% 14% 15% 16% 18%...

Periods 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% 12% 14% 15% 16% 18% 20% 1 0.990 0.980 0.971 0.962 0.952 0.943 0.935 0.926 0.917 0.909 0.893 0.877 0.870 0.862 0.847 0.833 2 0.980 0.961 0.943 0.925 0.907 0.890 0.873 0.857 0.842 0.826 0.797 0.769 0.756 0.743 0.718 0.694 3 0.971 0.942 0.915 0.889 0.864 0.840 0.816 0.794 0.772 0.751 0.712 0.675 0.658 0.641 0.609 0.579 4 0.961 0.924 0.888 0.855 0.823 0.792 0.763 0.735 0.708 0.683 0.636...

Estriol - X Birthweight -y 7 25 9 25 9 25 12 27 14 27 16...

Estriol - X Birthweight -y 7 25 9 25 9 25 12 27 14 27 16 27 16 24 14 30 16 30 16 31 17 30 19 31 21 30 24 28 15 32 16 32 17 32 25 32 27 34 15 34 15 34 15 35 16 35 19 34 18 35 17 36 18 37 20 38 22 40 25 39 24 43 The table shown above is taken from the Greene-Touchstone study which shows the...

The following sample was taken: 1, 9, 11, 3, 12, 15, 16, 8, 7, 8, 12,...

The following sample was taken: 1, 9, 11, 3, 12, 15, 16, 8, 7, 8, 12, 3, 2, 6, 6, 7, 8, 10, 9, 5, 6, 7, 8, 6, 8, 7 a. Calculate the average b. Estimate the variance c. Build a 95% confidence interval for the standard deviation. Please, give your answer by hand. Thanks in advance.

x 3, 4, 5, 7, 8 y 3, 7, 6, 13, 14 (a) Find the estimates...

x 3, 4, 5, 7, 8 y 3, 7, 6, 13, 14 (a) Find the estimates of Bo and B1. Bo=bo= _____ (Round to three decimal places as needed.) B1=b1= ______(Round to four decimal places as needed.) (b) Compute the standard error the point estimate for se= ____ (c) Assuming the residuals are normally distributed, determine Sb1=____ (Round to four decimal places as needed.) (d) Assuming the residuals are normally distributed, test HoB1=0 versus H1:B1/=0 at the a=0.05 level of...

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