Homework Help is Here – Start Your Trial Now!
Math
Statistics
-. If the points on the scatter plot fall almost in line, then the correlation. A. negative B. perfect D. strong C. positive ofponds to high value of the second

-. If the points on the scatter plot fall almost in line, then the correlation. A. negative B. perfect D. strong C. positive ofponds to high value of the second

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
B. strong positive 14. If the points on the scatter plot fall almost in line, then the variables are said to have correlation. D. strong C. positive A. negative B. perfect 15. Joan noticed that the high value of one variable corresponds to high value of the second variable or low value of the first corresponds to low value of second variable. What conclusion can you draw from the direction of correlation? A. The variables have zero correlation. C. The variables have negative correlation. 16. Which of the following is used to measure the data? B. The variables have positive correlation. D. The variables have moderate correlation. strength of the association between bivariate A. z- value B. diagram C. Pearson - b D. Pearson's sample correlation coefficient 17. In the formula of Pearson r, what is the meaning of [xy? A. sum of x-values B. sum of square x-values C. sum of the square of paired values x and y 18. In computing Pearson r, which of the following entries in all columns in the table? D. sum of the products of paired values x and y is the next step after obtaining the sum of all A. Construct a table. B. Complete the table. C. Simplify and compute for the value of r. 19. Which of the following is the range of the correlation A. 0≤r≤ 1 B. 1 ≤rs-1 D. Substitute all the sum and n in the formula. coefficient (r)? C. -1 <r < 1 D. -1 ≤r≤1 20. Using the given summation values below, what is the value of Pearson r? n = 3 Ex= 10 Ey = 15 Exy = 60 x² = 14 y² = 450 B. 0 A. -0.06 C. 0.11 D. 1 21. Which of the following statements about correlation is NOT correct? A. Every correlation has strength only. B. Correlation is a number from -1 and 1. C. A correlation can either be positive or negative. D. Correlation determines the direction between two variables 22. Miguel needs to analyze the strength of the relationship between two variables. What is the correct statistical method he needs to conduct? A. Z-test B. Pearson co C. Pearson alpha D. Pearson's sample correlation coefficient 23. Which of the following Pearson coefficients is considered having the weakest negative correlation? A. 0.45 B. -0.1 C. -0.45 D. -0.98 24. There is a survey indicating that as weather gets colder, air-conditioning costs decrease. Which of the following values of r is appropriate to the result of the survey? A. -0.93 B. 0 C. 0.19 D. 0.87 25. The correlation coefficient r between the number of bags of popcorn and the number of sodas sold at each performance of the circus over one week was found to be 0.62. Which conclusion can be drawn from the result? A. There is no correlation between popcorn sales and soda sales. B. There is a strong positive correlation between popcorn sales and soda sales. C. There is a weak positive correlation between popcorn sales and soda sales. D. There is a strong negative correlation between popcorn sales and soda sales.
Transcribed Image Text:B. strong positive 14. If the points on the scatter plot fall almost in line, then the variables are said to have correlation. D. strong C. positive A. negative B. perfect 15. Joan noticed that the high value of one variable corresponds to high value of the second variable or low value of the first corresponds to low value of second variable. What conclusion can you draw from the direction of correlation? A. The variables have zero correlation. C. The variables have negative correlation. 16. Which of the following is used to measure the data? B. The variables have positive correlation. D. The variables have moderate correlation. strength of the association between bivariate A. z- value B. diagram C. Pearson - b D. Pearson's sample correlation coefficient 17. In the formula of Pearson r, what is the meaning of [xy? A. sum of x-values B. sum of square x-values C. sum of the square of paired values x and y 18. In computing Pearson r, which of the following entries in all columns in the table? D. sum of the products of paired values x and y is the next step after obtaining the sum of all A. Construct a table. B. Complete the table. C. Simplify and compute for the value of r. 19. Which of the following is the range of the correlation A. 0≤r≤ 1 B. 1 ≤rs-1 D. Substitute all the sum and n in the formula. coefficient (r)? C. -1 <r < 1 D. -1 ≤r≤1 20. Using the given summation values below, what is the value of Pearson r? n = 3 Ex= 10 Ey = 15 Exy = 60 x² = 14 y² = 450 B. 0 A. -0.06 C. 0.11 D. 1 21. Which of the following statements about correlation is NOT correct? A. Every correlation has strength only. B. Correlation is a number from -1 and 1. C. A correlation can either be positive or negative. D. Correlation determines the direction between two variables 22. Miguel needs to analyze the strength of the relationship between two variables. What is the correct statistical method he needs to conduct? A. Z-test B. Pearson co C. Pearson alpha D. Pearson's sample correlation coefficient 23. Which of the following Pearson coefficients is considered having the weakest negative correlation? A. 0.45 B. -0.1 C. -0.45 D. -0.98 24. There is a survey indicating that as weather gets colder, air-conditioning costs decrease. Which of the following values of r is appropriate to the result of the survey? A. -0.93 B. 0 C. 0.19 D. 0.87 25. The correlation coefficient r between the number of bags of popcorn and the number of sodas sold at each performance of the circus over one week was found to be 0.62. Which conclusion can be drawn from the result? A. There is no correlation between popcorn sales and soda sales. B. There is a strong positive correlation between popcorn sales and soda sales. C. There is a weak positive correlation between popcorn sales and soda sales. D. There is a strong negative correlation between popcorn sales and soda sales.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS