Which of the following sets of correlations is/are correctly ordered from highest to lowest degree of relationship?-0.91, +0.83, -0.03, -0.10+0.83, +0.10, -0.91, -0.03-0.91, +0.83, +0.10, -0.03+0.83, +0.10, -0.03, -0.91

Solution r be the correlation coefficient

Answered: Which of the following sets of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Two variables are found to have a strong positive linear correlation. Pick the correct statement. An increase in one variable potentially causes a decrease in the other. An increase in one variable does not cause a decrease in the other. An increase in one variable does not cause an increase in the other. An increase in one variable potentially causes an increase in the other. An increase in one variable causes a decrease in the other. An increase in one variable causes an increase in the other.
Which of the R values below is consistent with a "perfect" correlation? a. 0.0 b. 0.5 c. -1.0 d. 0.95
Which of the following sets of correlations shows the highest to lowest degree of relationship? A. +.70, +.15, -.10, -.85 B. -.85, +.70, -.10, +.15 C. +.70, +.15, -.85, -.10 D. -.85, +.70, +.15, -.10 E. -.10, +.15, +.70, -.85
The correlation between a variable and itself is always equal to 0.5 -1 1
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 32 75 y 40 35 30 26 18 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative moderate and negative strong and positive low and negative low and positive moderate and positive (c) Use a calculator to verify that Σx = 132, Σx2 = 6932, Σy = 149, Σy2 = 4725, and Σxy = 2997. Compute r. (Round your answer to three decimal places.)r = As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to…
Which r is the strongest correlation? O -0.8 O-0.18 O-0.09 O 0.711 O 0.4
A food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85
Here are several scatterplots. The calculated correlations are -0.977, 0.006, -0.487, and 0.777. Which is which? (a) (b) Match each scatterplot with its calculated correlation. (a) (b) (c) (c) (d) (d) 口ロ口口

Which of the following correlation (r) show a negative association between 2 variables? 0.2 -1.4 0.4 -0.8
calculate the correlation coefficient to three decimal places, x is 4,5,6,7,8,9, y, 6.05,8.64,3.93,4.92,2.31,4
The strength of the correlation is indicated by a number value and the closer that value is to zero, the weaker the correlation. O True O False
Identify a likely choice for the correlation between X and Y in the graph below: Y G 0 -5 -10 -15 Pick ONE option 0.8 0.2 -0.1 O -0.7 2 80 4 X 6 It could be any of the above choices 8

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Which of the following sets of correlations is/are correctly ordered from highest to lowest degree of relationship? -0.91, +0.83, -0.03, -0.10 +0.83, +0.10, -0.91, -0.03 -0.91, +0.83, +0.10, -0.03 +0 82 10 10 00n