Homework Answers
Correlation is a measure of linear relationship between the two variables.
Hence strength of linear association is measured by correlation.
Hence option ( C) is the correct choice
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12-006-2019S2 - ESTADISTI AS II Select the most appropriate answer. The strength of a linear association...
1. Choose the correct answer from the choices given. (2 points) a. Select the most likely...
1. Choose the correct answer from the choices given. (2 points) a. Select the most likely answer for the coefficient of linear correlation for the two the number of hours spent studying for a test y = the number of points earned on the test variables described below: x= r= 1.20 B. r 0.70 C. r= -0.85 D. r= 0.05 1. Choose the correct answer from the choices given. (2 points) a. Select the most likely answer for the coefficient...
Show work please A researcher measures the association between the radius of the forearm (inches) and...
Show work please
A researcher measures the association between the radius of the forearm (inches) and the gripping strength (pounds) of 20 teenagers given by the graph below. 70 50 90 11 1 314 Crcum The graph indicates which type of association between forearm radius and grip strength The measurement grip strength is the The type of association between circumference and grip strength is a. i. Positive ii. Negative ii. No association b. i. Explanatory variable i Response variable c....
Which of the following best describes correlation? a.) Correlation measures the strength of the relationship between...
Which of the following best describes correlation? a.) Correlation measures the strength of the relationship between any two variables. b.) Correlation measures the strength of the linear association between two categorical variables. c.) Correlation measures how much a change in the explanatory variable causes a change in the response variable. d.) Correlation measures the strength of the linear relationship between two quantitative variables.
The highest strength of association is reflected by which of the following correlation coefficients? Select one:...
The highest strength of association is reflected by which of the following correlation coefficients? Select one: a. -1.0 b. -0.95 c. 0.1 d. 0.85 e. none the above, as it cannot be determined
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis...
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram (a)r= - 1. (b) r= -0.992, (c) r= -0.049 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram Response Question Explanatory Response Explanatory Match the linear correlation coefficient to the scatter diagram. r= -0.025 Choose the correct graph below. ОА. ОВ. OC. OD 2 wody ..: E E Explanatory Explanatory Explanatory Explanatory Click to select...
The correlation coefficient is a summary measure that Select one: a. is of limited use because...
The correlation coefficient is a summary measure that Select one: a. is of limited use because it fails to indicate the direction of the relationship between the variables. b. indicates the change in Y for a one unit change in X. c. indicates the strength of linear relationship between a pair of quantitative variables. d. indicates the proportion of variation in Y that is explained by the variation in X. e. none of the above. In regression analysis, the F...
Consider a linear regression model where y represents the response variable, x is a quantitative explanatory...
Consider a linear regression model where y represents the response variable, x is a quantitative explanatory variable, and d is a dummy variable. The model is estimated as yˆy^ = 14.6 + 4.5x − 3.4d. a. Interpret the dummy variable coefficient. Intercept shifts down by 3.4 units as d changes from 0 to 1. Slope shifts down by 3.4 units as d changes from 0 to 1. Intercept shifts up by 3.4 units as d changes from 0 to 1. Slope shifts...
Consider a linear regression model where y represents the response variable, x is a quantitative explanatory...
Consider a linear regression model where y represents the response variable, x is a quantitative explanatory variable, and d is a dummy variable. The model is estimated as yˆy^ = 14.4 + 4.6x − 3.1d. a. Interpret the dummy variable coefficient. Intercept shifts down by 3.1 units as d changes from 0 to 1. Slope shifts down by 3.1 units as d changes from 0 to 1. Intercept shifts up by 3.1 units as d changes from 0 to 1. Slope shifts...
The following information regarding a dependent variable (Y in $1000) and an independent variable (X) is...
The following information
regarding a dependent variable (Y in $1000) and an independent
variable (X) is provided.
Y
Dependent Variable
15
17
23
17
I. The least-squares estimate of the slope
equals:
II. The least-squares estimate of the intercept
equals:
III. If the independent variable increases by 2
units, the dependent variable is expected to
a. decrease by $300
b. decrease by $3000
c. decrease by $3
d. decrease by $2
e. none of the above
The letter corresponding...
The following information regarding a dependent variable (Y in $1000) and an independent variable (X) is...
The following information regarding a dependent variable (Y in
$1000) and an independent variable (X) is provided.
Y
Dependent Variable
15
17
23
17
I. The least-squares estimate of the slope
equals:
II. The least-squares estimate of the intercept
equals:
III. If the independent variable increases by 2
units, the dependent variable is expected to
a. decrease by $300
b. decrease by $3000
c. decrease by $3
d. decrease by $2
e. none of the above
The letter corresponding...
1. Choose the correct answer from the choices given. (2 points) a. Select the most likely answer for the coefficient of linear correlation for the two the number of hours spent studying for a test y = the number of points earned on the test variables described below: x= r= 1.20 B. r 0.70 C. r= -0.85 D. r= 0.05 1. Choose the correct answer from the choices given. (2 points) a. Select the most likely answer for the coefficient...
Show work please
A researcher measures the association between the radius of the forearm (inches) and the gripping strength (pounds) of 20 teenagers given by the graph below. 70 50 90 11 1 314 Crcum The graph indicates which type of association between forearm radius and grip strength The measurement grip strength is the The type of association between circumference and grip strength is a. i. Positive ii. Negative ii. No association b. i. Explanatory variable i Response variable c....
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram (a)r= - 1. (b) r= -0.992, (c) r= -0.049 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram Response Question Explanatory Response Explanatory Match the linear correlation coefficient to the scatter diagram. r= -0.025 Choose the correct graph below. ОА. ОВ. OC. OD 2 wody ..: E E Explanatory Explanatory Explanatory Explanatory Click to select...
The following information
regarding a dependent variable (Y in $1000) and an independent
variable (X) is provided.
Y
Dependent Variable
15
17
23
17
I. The least-squares estimate of the slope
equals:
II. The least-squares estimate of the intercept
equals:
III. If the independent variable increases by 2
units, the dependent variable is expected to
a. decrease by $300
b. decrease by $3000
c. decrease by $3
d. decrease by $2
e. none of the above
The letter corresponding...
The following information regarding a dependent variable (Y in
$1000) and an independent variable (X) is provided.
Y
Dependent Variable
15
17
23
17
I. The least-squares estimate of the slope
equals:
II. The least-squares estimate of the intercept
equals:
III. If the independent variable increases by 2
units, the dependent variable is expected to
a. decrease by $300
b. decrease by $3000
c. decrease by $3
d. decrease by $2
e. none of the above
The letter corresponding...
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