Question

Consider the following sample data: x 20 19 24 21 27 y 27 21 24 19...

Consider the following sample data:

x 20 19 24 21 27
y 27 21 24 19 20

Click here for the Excel Data File

a. Calculate the covariance between the variables. (Negative value should be indicated by a minus sign. Round your intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)


b. Calculate the correlation coefficient. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Consider the following sample data: x 11 13 27 22 30 y 28 26 25 20...
Consider the following sample data: x 11 13 27 22 30 y 28 26 25 20 16 Click here for the Excel Data File a. Calculate the covariance between the variables. (Negative value should be indicated by a minus sign. Round your intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) b. Calculate the correlation coefficient. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.
Consider the following information on the expected return for companies X and Y. Economy Probability X...
Consider the following information on the expected return for companies X and Y. Economy Probability X Y Boom 0.15 25 % 12 % Neutral 0.56 12 % 27 % Poor 0.29 −27 % 7 %      a. Calculate the expected value and the standard deviation of returns for companies X and Y. (Round intermediate calculations to at least 4 decimal places. Round your final answers to 2 decimal places.) Company X Company Y Expected Value % % Standard Deviation %...
Given the following sample observations, draw a scatter diagram on a separate piece of paper. X:...
Given the following sample observations, draw a scatter diagram on a separate piece of paper. X: −8 −17 13 4 16 Y: 53 247 155 1 339   Click here for the Excel Data File Compute the correlation coefficient. (Round your answer to 3 decimal places.) Does the relationship between the variables appear to be linear? Yes No Try squaring the x variable and then determine the correlation coefficient. (Round your answer to 3 decimal places.)
1 2 3 4 5 X 7 20 6 17 20 Y 7 19 11 9...
1 2 3 4 5 X 7 20 6 17 20 Y 7 19 11 9 3 The following sample observations were randomly selected: 1. Determine the regression equation. (Negative answers should be indicated by a minus sign. Do not round intermediate calculations. Round the final answer to 4 decimal places.) b= a= Y'= ------ + ------ X 2. Determine the value of Y' When X is 20. (Do not round intermediate calculations. Round the final answer to 4 decimal...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 21 22...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 21 22 22 17 21 17 23 20 20 24 9 22 16 21 22 21     Click here for the Excel Data File Find a 90% confidence interval for μ, assuming that the sample is from a normal population. (Round your standard deviation answer to 4 decimal places and t-value to 3 decimal places. Round your final answers to 3 decimal places.) The 90% confidence interval...
A random sample of five observations from three normally distributed populations produced the following data: (You...
A random sample of five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) Treatments A B C 31 29 23 29 25 20 22 28 21 31 15 16 31 17 23 x−A = 28.8 x−B = 22.8 x−C = 20.6 s2A = 15.2 s2B = 41.2 s2C = 8.3 Click here for the Excel Data File a. Calculate the grand mean. (Round intermediate calculations to at least...
Consider the following information on the expected return for companies X and Y. Economy Probability X...
Consider the following information on the expected return for companies X and Y. Economy Probability X Y Boom 0.24 38 % 17 % Neutral 0.49 13 % 29 % Poor 0.27 −28 % 4 % a. Calculate the expected value and the standard deviation of returns for companies X and Y. (Round intermediate calculations to at least 4 decimal places. Round your final answers to 2 decimal places.) b. Calculate the correlation coefficient if the covariance between X and Y...
Consider a sample with data values of 27, 24, 21, 19, 32, 36, 29, and 24....
Consider a sample with data values of 27, 24, 21, 19, 32, 36, 29, and 24. Compute the range, interquartile range, variance, and standard deviation (to a maximum of 2 decimals, if decimals are necessary). Range Interquartile range Variance Standard deviation
Consider the following population data: 42 48 19 16 28 a. Calculate the range. b. Calculate...
Consider the following population data: 42 48 19 16 28 a. Calculate the range. b. Calculate MAD. (Round your intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) c. Calculate the population variance. (Round your intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) d. Calculate the population standard deviation. (Round your intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 27 31...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 27 31 17 22 22 18 10 15 19 20 23 18 13 22 27 14 Click here for the Excel Data File Find a 90 percent confidence interval for μ, assuming that the sample is from a normal population. (Round your standard deviation answer to 4 decimal places and t-value to 3 decimal places. Round your answers to 3 decimal places.) The 90% confidence interval...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT