Which value of r indicates a stronger correlation: r= 0.841 or r= - 0.949? Explain your reasoning.Choose the correct answer below.O A. r= 0.841 represents a stronger correlation because -0.949 > 0.841|.B. r= - 0.949 represents a stronger correlation because -0.949|> |0.841|.C. r= - 0.949 represents a stronger correlation because 0.841 > - 0.949.D. r= 0.841 represents a stronger correlation because 0.841 > - 0.949.

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Answered: Which value of r indicates a stronger…

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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Q14Mariam wants to see how the number of absences for a student in her class affects the student’s final grade. The data obtained from a sample are shown. Absences (x)1012208Grade (y)7055968475 Find the correlation coefficient between number of absences and final grade. Round your answer to three decimal places.
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 is an example of positive correlation? O a. More football you play, less weight you will gain. O b. As weather gets hotter, the cost of air conditioning increases. O C. As a car tire has more air, the car may use less gas per mile. O d. The older man gets, he may have less hair.
Which of the following is a plausible correlation for a person’s height and age from birth to age 10? a. 0.89 b. 0 c. -0.89
Suppose in a given problem about the correlation between height and weight of 20 college students, we come up with an r value of 0.93. What is the value of the coefficient of determination? a. 0.84b. 0.85c. 0.86d. 0.87
Suppose a clinical psychologist sets out to see whether sexual orientation is related to relationship longevity. He decides to measure relationship satisfaction in a group of homosexual couples and a group of heterosexual couples. He chooses the Marital Satisfaction Inventory because it refers to "partner" and "relationship" rather than "spouse" and "marriage," which makes it useful for research with both traditional and nontraditional couples. Higher scores on the Marital Satisfaction Inventory indicate greater relationship satisfaction. The psychologist administers the Marital Satisfaction Inventory to 53 couples-23 are homosexual couples and 30 are heterosexual couples. He wants to calculate the correlation between a couple's relationship satisfaction and sexual orientation. Which of the following types of correlations would be most appropriate for the psychologist to use? O A phi-correlation A Spearman correlation OA point-biserial correlation A Pearson correlation
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
A correlation value of -0.15 is considered a(n) ______ correlation. a. insignificant b. small c. large d. medium
A correlation coefficient (r) of .40 implies that: ____ Group of answer choices 16 percent of the variation in the dependent variable is explained by the independent variable. 84 percent of the variation in the dependent variable is explained by the independent variable. 60 percent of the variation in the dependent variable is explained by the independent variable. 40 percent of the variation in the dependent variable is explained by the independent variable.
Which number below is representative of the largest correlation? r = -0.75 r = .05 r = -0.45 r = 0.65
Which of the following correlations indicates the strongest relationship or association and why? r = .10; r = .03; r = -.35; r = -15
Listed are 4 correlations. Put them in order showing the highest to lowest degree of relationship: +0.08 -0.27 +0.99 -0.48

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