Question

In: Math

The association between the variables "dollars earned" and "hours worked" for a worker at store would...

The association between the variables "dollars earned" and "hours worked" for a worker at store would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 2

The association between the variables "GPA" and "hours spent studying" for a student would usually be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 3

The association between the variables "cost of a book" and "the buyers body temperature" would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 4

The association between the variables "airfare" and "distance to destination" would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

QUESTION 5

A graph that will help to one to see what type of curve might best fit the bivariate data

	a.	Pie chart
	b.	stem-leaf plot
	c.	dot plot
	d.	scatter plot

QUESTION 6

If the correlation coefficient for a linear regression is -0.932. there is sufficient evidence that a linear relationship exists between the x and y data

	a.	TRUE
	b.	FALSE

QUESTION 7

Which of the following correlation coefficients represents the most linear function?

	a.	0.976
	b.	0.001
	c.	-0.002
	d.	-0.989

QUESTION 8

If the correlation coefficient for linear regression is 0.25. there is sufficient evidence that a linear relationship exists between the x and y data

	a.	TRUE
	b.	FALSE

QUESTION 9

A data point that lies statistically far from the regression line is a potential

	a.	response variable
	b.	predictor variable
	c.	extrapolated variable
	d.	outlier

QUESTION 10

correlation5:

If the correlation coefficient is 0.90, the value of the coefficient of determination would be

	a.	0.90
	b.	0.81
	c.	0.45
	d.	0.10

QUESTION 11

Use your TI83 to determine the correlation coefficient of the following set of points. Round correctly to the nearest hundredth.

(4, 4), (-2, -7), (3, 3), (4, -1)

QUESTION 12

Use your TI83 to determine the correlation coefficient of the following set of points. Round correctly to the nearest hundredth.

(4, 4), (-2, -4), (7, -2), (4, 1)

QUESTION 13

Use your TI83 to determine the correlation coefficient of the following set of points. Round correctly to the nearest hundredth.

(2, 4), (1, -1), (2, 2), (5, -4)

Expert Solution

Solution:

milcah answered 1 year ago

What if the worker initially worked 8 hours a day? Discuss, but do not draw, the...

What if the worker initially worked 8 hours a day? Discuss, but do not draw, the effect of the UBI on hours of work, based on economic theory, for someone who worked full time before UBI began.

QUESTion 6 The association between the variables "golf score" and "golf skill" would be a. POSITIVE...

QUESTion 6 The association between the variables "golf score" and "golf skill" would be a. POSITIVE b. NEGATIVE c. NEITHER QUESTION 7 If the correlation coefficient for a lnear regression is 0.987. there is sufficient evidence that a linear relationship exists between the x and y data a. TRUE b. FALSE QUESTION 8 If the correlation coefficient for a lnear regression is -0.932. there is sufficient evidence that a linear relationship exists between the x and y data a. TRUE...

Information about an association between two interval-ratio variables is presented below. The association is between “the...

Information about an association between two interval-ratio variables is presented below. The association is between “the hours of screen time per day” (Y) and “years of schooling” (X). A measure of the overall association is given as well as the specific components of the OLS model. The OLS model estimates the effect of education (X) on the hours of screen time per day (Y). Association Between x and y Estimate r -0.229 Rsqrd OLS Model components Estimate Constant (a)...

To test whether there is an association between overtime hours of employees with the value of...

To test whether there is an association between overtime hours of employees with the value of performance obtained, then a random sample was taken at an agency of 12 employees. The 12 employees were then asked about their average overtime hours during the day and the value of the performance obtained. The average data of overtime hours per day and the performance values obtained by the employees are as follows Employee Overtime Hour Value o Performances A 5 81 B...

Variables: Region, Preferred_Status Is there an association between the state in which a student lives and...

Variables: Region, Preferred_Status Is there an association between the state in which a student lives and the student's preferred status? H0: The state in which a student lives and a student's preferred status are not associated. HA: The state in which a student lives and a student's preferred status are associated. Contingency table results: Rows: Region, Columns: Preferred_Status Cell format Count (Expected count) Happy & Healthy Rich & Famous Total CA 201 (199.5) 60 (61.5) 261 SC 65 (66.5) 22...

When you determine if there is an association between two variables, it is also important for...

When you determine if there is an association between two variables, it is also important for you to determine how strong or weak that association is. This is why, when you have data for two quantitative variables, you calculate what is called the coefficient for correlation. Instructions Suppose you are determining the association between the weight of a car and the miles per gallon that the car gets. Answer the following questions in a Word document: define correlation and explain...

Jane wishes to investigate the association between the average length of sleep in hours and an...

Jane wishes to investigate the association between the average length of sleep in hours and an NUS student’s Cumulative Average Point (CAP). She collated responses from 250 undergraduates, found the correlation to be 0.87, and established a linear regression equation of CAP (y) against the length of sleep (x): y=0.5x+0.5 Which of the following is true? A) If we group the data into different faculties and we take the average C.A.P and average length of sleep per faculty, we will...

When is it inappropriate to use linear regression for measuring the association between two variables?

True or Flase Which of the statements is true? a. Observing an association between two variables...

True or Flase Which of the statements is true? a. Observing an association between two variables automatically means that there is a cause and effect relationship. b. The fact that there is a strong association between smoking and lung cancer shows that smoking actually causes lung cancer. c. The best way to make a case for causation is to do a good experiment. d. A strong observed association is due to direct cause-and-effect, never the effects of a lurking variable....

Would you consider Labor (number of hours worked) as a normal or an inferior good? Explain...

Would you consider Labor (number of hours worked) as a normal or an inferior good? Explain your answer in details in line with the theory covered in class. As a policy maker managing human resources, what would be the advantages and disadvantages of having Labor as an inferior good?