The correlation coefficient: A, Is a number with a range from -1 to 1 B. If...
The correlation coefficient:
A, Is a number with a range from -1 to 1
B. If there is no correlation, the coefficient is negative
C. If the correlation coefficient is negative, it indicates a strong positive relationship between x and y
D. All of the above
Homework Answers
Add Answer to:
The correlation coefficient:
A, Is a number with a range from -1 to 1
B. If...
Let r be the correlation coefficient. Denote the explanatory variable by X and the responsible variable...
Let r be the correlation coefficient. Denote the explanatory variable by X and the responsible variable by Y . Which statement is correct ? (A) Positive r indicates a perfect linear relationship between X and Y . (B) r is always a number between 0 and 1. (C) r is almost 0 if values of X’s and Y ’s are all positive. (D) The correlation of variables −X and Y is −r. (E) None of the above.
(8 points) Match the following sample correlation coefficients with the explanation of what that correlation coefficient...
(8 points) Match the following sample correlation coefficients with the explanation of what that correlation coefficient means. Type the correct letter in each box. 1. r = -.15 2. r = 0 3. r = 1 4. r = -97 A. a strong negative relationship between x and y B. no relationship between x andy C. a weak negative relationship between x and y D. a perfect positive relationship between x and y Note: You can earn partial credit on...
1. How would you interpret correlation coefficient of: -0.95? A. Not a good correlation measure B....
1. How would you interpret correlation coefficient of: -0.95? A. Not a good correlation measure B. Week negative correlation C. Strong negative correlatio D. Not enough information to determine correlation 2. What statistical measures are used for describing dispersion in data? How do they differ from one another? A. Range, variance, and standard deviation B. Mean absolute deviation C. Mean, median, and mode D. Mean, standard deviation, and interquartile range 3. What is the difference between a population and a...
Fill in the blank A researcher determines that the linear correlation coefficient is 0.85 for a...
Fill in the blank A researcher determines that the linear correlation coefficient is 0.85 for a paired data set. This indicates that there is OA. a strong positive linear correlation B. insufficient evidence to make any decision about the correlation of the data C. a strong negative linear correlation D. no linear correlation but that there may be some other relationship
Find the covariance and correlation coefficient for the following sets of data. Select the answers equal...
Find the covariance and correlation coefficient for the following sets of data. Select the answers equal to or closest to your results. X: 50 44 47 40 54 Y: 10 13 95 7 Cov What does each measure tell you? Check all that apply. The covariance tells you that there is a weak or nonexistent linear relationship between X and Y The covariance and correlation coefficient tell you that there is a positive linear relationship between X and Y. The...
1. construct a scatter plot for the variables 2. compute the value of the correlation coefficient...
1. construct a scatter plot for the variables 2. compute the value of the correlation coefficient 3. give an explanation of the type nof relationship that exists between the two variables. The explanation should be a short paragraph. In this paragraph inclue the following: *say whether the is a strong positiv elinear correlation, weak positive linear correlation, strong ngative linear correlation, weak negative correlation, or no linear correlation between the two variables. *explain how you can see this from the...
4) Which of the following statements regarding the correlation coefficient is not true?
Which of the following statements regarding the correlation coefficient is not true? A) The correlation coefficient has values that range from-1.0 to 1.0 inclusive. B) The correlation coefficient measures the strength of the linear relationship between two numerical variables C) A value of 0.00 indicates that two variables are perfectly linearly correlated D) All of these are true statements
Determine if the following statement is true or false. A correlation coefficient close to 1 is...
Determine if the following statement is true or false. A correlation coefficient close to 1 is evidence of a cause-and-effect relationship between the two variables. The statement is true O A. False. Only a correlation coefficient close to 0 indicates a cause-and-effect relationship between the two variables O B. False. A correlation coefficient should not be interpreted as a cause-and-effect relationship O c. True, but only if all the conditions for correlation are met. False. A correla.on coefficient of 1...
Consider a two-dimensional scatterplot representing the relationship between two continuous variables. If the correlation coefficient is...
Consider a two-dimensional scatterplot representing the relationship between two continuous variables. If the correlation coefficient is -1, then: a. All points lie in a straight line with a slope of -1. b. All points lie in a straight line with an unknown negative slope. c. All points do not lie in a straight line but the best fitting regression line has a slope of -1. d. There is a strong positive relationship between the two variables.
MTQ 6- A coefficient of correlation is computed to be -2.0. It means that The relationship...
MTQ 6- A coefficient of correlation is computed to be -2.0. It means that The relationship between two variables is weak. The relationship between two variables is strong and positive The relationship between two variables is strong and negative Correlation coefficient cannot have this value 7- Which one of the following is not unbiased estimators Sample Proportions Sample Means Sample Variances Sample Medians
(8 points) Match the following sample correlation coefficients with the explanation of what that correlation coefficient means. Type the correct letter in each box. 1. r = -.15 2. r = 0 3. r = 1 4. r = -97 A. a strong negative relationship between x and y B. no relationship between x andy C. a weak negative relationship between x and y D. a perfect positive relationship between x and y Note: You can earn partial credit on...
Fill in the blank A researcher determines that the linear correlation coefficient is 0.85 for a paired data set. This indicates that there is OA. a strong positive linear correlation B. insufficient evidence to make any decision about the correlation of the data C. a strong negative linear correlation D. no linear correlation but that there may be some other relationship
Find the covariance and correlation coefficient for the following sets of data. Select the answers equal to or closest to your results. X: 50 44 47 40 54 Y: 10 13 95 7 Cov What does each measure tell you? Check all that apply. The covariance tells you that there is a weak or nonexistent linear relationship between X and Y The covariance and correlation coefficient tell you that there is a positive linear relationship between X and Y. The...
Determine if the following statement is true or false. A correlation coefficient close to 1 is evidence of a cause-and-effect relationship between the two variables. The statement is true O A. False. Only a correlation coefficient close to 0 indicates a cause-and-effect relationship between the two variables O B. False. A correlation coefficient should not be interpreted as a cause-and-effect relationship O c. True, but only if all the conditions for correlation are met. False. A correla.on coefficient of 1...
Most questions answered within 3 hours.
-
2. Boris recently synthesized an explosive compound he named
Badenoughium. The molecular formula for Bdenoughium is...
asked 1 hour ago -
5. A car decelerate evenly from a velocity of 50mph until rest
in a distance of...
asked 1 hour ago -
IN HTML Programming
1. Write a script that inputs integers (one at a time) and
passes...
asked 1 hour ago -
A dentist uses a mirror to examine a tooth that is 0.75 cm in
front of...
asked 1 hour ago -
You set up a 100,000 line of credit for the business on 1/1/X8,
annual interest is...
asked 1 hour ago -
What is the measurement uncertainty of a pan balance? How did you
get that?
asked 1 hour ago -
Suppose four firms have market shares of 30%, 30%, 20% and 20%.
What is the Herfindahl-Hirschman...
asked 1 hour ago -
IBT Industrial Solutions produces forty units of rack and pinion
type steering gears during an eight...
asked 1 hour ago -
The Ksp for PbI2 is 9.8×10−9 . Will PbI2 precipitate if 2.5 mL
of 0.0025 M...
asked 1 hour ago -
- Write a Person Constructor that initializes `name` and
`age` from arguments.
- All instances of...
asked 1 hour ago -
What is the meaning of the statement: In acid-base catalysis,
acid catalysis involves partial proton transfer...
asked 1 hour ago -
Polo Publishers purchased a multi-color offset press with terms
of $65,000 down and a noninterest-bearing note...
asked 1 hour ago