1a) Let's say that you made a scatterplot for bivariant data such that the x-values ranged...
1a) Let's say that you made a scatterplot for bivariant data such that the x-values ranged from 50 to 85. From this, you successfully created a linear regression equation. Why should you not use the equation to make predictions of the y-value with x = 20 but you can for x = 60?
b) Let the coefficient of determination be 0.81. If you were provided no additional information, what is one thing you can determine about the correlation coefficient and what is one thing that you don't know for sure?
c)
Here's a statement about the coefficient of determination from the book:
Approximately 44%
of the variation (0.4397 is approximately 0.44) in the final-exam
grades can be explained by the variation in the grades on the third
exam, using the best-fit regression line.
Explain what that means using everyday language (as if you were
explaining it to your bff)?
Homework Answers
Add Answer to:
1a) Let's say that you made a scatterplot for bivariant data
such that the x-values ranged...
58. The equation of a regression line is Y = 20 +5X where X = hours...
58. The equation of a regression line is Y = 20 +5X where X = hours studied and Y = exam score. Interpret the slope. a) As study time increases by 5 hours, exam score increases by 20 points on average. b) As study time increases by 1 hour exam score increases by 5 points on average. c) As study time increases by 5 hour exam score increases by 1 point on average. d) We expect a student who does...
QUESTION 9 The following data give the percentage of women working (x) in five companies in...
QUESTION 9 The following data give the percentage of women working (x) in five companies in the retail and trade industry. The percentage of management jobs (y) held by women in each company is also shown. Given that SSy- 1120 62 40 68 49 56 1936 256 3600 1764 781 15605 8340 3844 1600 4624 2728 640 4080 058 15б8 1074 16 60 28 3136 Sum 190 Based on question (8), which of the following statement is correct for the...
Find the margin of error for the given values of c, s, and n. c 0.90,...
Find the margin of error for the given values of c, s, and n. c 0.90, s-2.7, n 29 Click the icon to view the t-distribution table. The margin of error is . (Round to one decimal place as needed.) Which value of r indicates a stronger correlation: 0.846 or0.933? Explain your reasoning. Choose the correct answer below A. r=-0.933 represents a stronger correlation because l-0.939 > 10.845. B. r0.846 represents a stronger correlation because 0.846> -0.933. C.-0.933 represents a...
Data from the U.S. Federal Reserve board ( Household Debt Service burder,2002) on consumer debt (...
Data from the U.S. Federal Reserve board ( Household Debt
Service burder,2002) on consumer debt ( as a percentage of personal
income) and mortgage debt ( also a percentage of personal income)
for selected years are shown in the following tableWhat is the value of
correlation coefficient (r) for this data set? Based on the value
of r, what can you say about their linear relationship?
If Consumer debt is independent (predictor) variable and
household debt is dependent (response) variable....
can you do 32 and 33 for me plz ? just 2 multiple choices thanks Consider the following Excel regression output Date Analysis (picture is automatic) SUMMARY OUTPUT output of six data points on a resta...
can you do 32 and 33 for me
plz ? just 2 multiple choices thanks
Consider the following Excel regression output Date Analysis (picture is automatic) SUMMARY OUTPUT output of six data points on a restaurant bill and corresponding tip. Bill Line Fit Plot R Square 0.828159148 0.685847574 0.607309468 3.265807868 R Square Stendard Error Total 10.66550103 Coefficients Standard Evor 0,347279172 .936081493 D.08872967 0.9 9551584 32) Choose correct correlation interpretation: (a) Positive correlation of 0.83- strong corelation. Percentage of variation explained...
Home X Correlation coefficient Calcula x Conduct and interpreta Bivar: X R Variance cakulator X 10:2...
Home X Correlation coefficient Calcula x Conduct and interpreta Bivar: X R Variance cakulator X 10:2 Homework X + bocc.instructure.com/courses/20438/assignments/257886 मैं Time Clock Plus MAT 107 8568 > Assignments > 10.2 Homework SUM I 2000 10.2 Homework Home Due Sunday by 11:59pm Points 5 Submitting an external tool Available Jul 7 at 12am. Aug 2 at 11:59pm 27 days Announcements Grades 10.2 Homework Score: 3.5/5 3/5 answered Done Syllabus Modules Question 4 < > B0/1 pt 100 99 Assignments Discussions...
Question 1 Which of the following choices best describes the scatterplot shown below? Group of answer...
Question 1 Which of the following choices best describes the scatterplot shown below? Group of answer choices Linear, negative, strong No form, weak Linear, positive, strong Curved, weak Question 2 Which of the following choices is most likely to be the correlation of the data in the scatterplot shown below? Group of answer choices -0.14 1.04 0.86 -0.92 Question 3 Most roller coasters get their speed by dropping down a steep initial incline, so it makes sense that we can...
*JUST NEED 3 and 4 ANSWERED THANKS* 1. Explore the data: create a scatterplot . 1a....
*JUST NEED 3 and 4 ANSWERED THANKS*
1. Explore the data: create a scatterplot
. 1a. Type the data into a blank SPSS spreadsheet. Name
variables as Distance and Snowfall respectively. Go to
Graphs-Legacy Dialogs-Scatter/Dot-Simple Scatter-Define. In the
window that follows, select Distance into X axis and Snowfall into
Y axis. Click on OK.
1b.Double click on the scatter plot to activate it. Double click
on the horizontal axis and select the Scale tab. At Auto, uncheck
all boxes. At...
A) B) C) Based on the data shown below, calculate the correlation coefficient to three decimal...
A)
B)
C)
Based on the data shown below, calculate the correlation coefficient to three decimal places) 19.59 16.71 114.53 7 13.14 11.85 11.17 13 849 7.3 Here is a bivariate data set. 38.7 91.5 25. 6 993 572 36. 4 854 293 218 83.7 Find the correlation coefficient and report it accurate to three decimal places. What proportion of the variation in y can be explained by the variation in the values of x? Report answer as a percentage...
he follo 2. Do heavier cars really use more gasoline? Suppose that a car is chosen...
he follo 2. Do heavier cars really use more gasoline? Suppose that a car is chosen at random. Let x be the weight of the car (in pounds), and let y be the miles per gallon (mpg). The following information is based on data taken from Consumer Reports (vol. 62, no. 4). cystolic 3400 5200 21 14 - Weight of Car (in pounds) 2700 4400 3200 4700 2300 4000 y-Miles per Gallon 30 19 24 13 29 17 . Find...
58. The equation of a regression line is Y = 20 +5X where X = hours studied and Y = exam score. Interpret the slope. a) As study time increases by 5 hours, exam score increases by 20 points on average. b) As study time increases by 1 hour exam score increases by 5 points on average. c) As study time increases by 5 hour exam score increases by 1 point on average. d) We expect a student who does...
QUESTION 9 The following data give the percentage of women working (x) in five companies in the retail and trade industry. The percentage of management jobs (y) held by women in each company is also shown. Given that SSy- 1120 62 40 68 49 56 1936 256 3600 1764 781 15605 8340 3844 1600 4624 2728 640 4080 058 15б8 1074 16 60 28 3136 Sum 190 Based on question (8), which of the following statement is correct for the...
Find the margin of error for the given values of c, s, and n. c 0.90, s-2.7, n 29 Click the icon to view the t-distribution table. The margin of error is . (Round to one decimal place as needed.) Which value of r indicates a stronger correlation: 0.846 or0.933? Explain your reasoning. Choose the correct answer below A. r=-0.933 represents a stronger correlation because l-0.939 > 10.845. B. r0.846 represents a stronger correlation because 0.846> -0.933. C.-0.933 represents a...
Data from the U.S. Federal Reserve board ( Household Debt
Service burder,2002) on consumer debt ( as a percentage of personal
income) and mortgage debt ( also a percentage of personal income)
for selected years are shown in the following tableWhat is the value of
correlation coefficient (r) for this data set? Based on the value
of r, what can you say about their linear relationship?
If Consumer debt is independent (predictor) variable and
household debt is dependent (response) variable....
can you do 32 and 33 for me
plz ? just 2 multiple choices thanks
Consider the following Excel regression output Date Analysis (picture is automatic) SUMMARY OUTPUT output of six data points on a restaurant bill and corresponding tip. Bill Line Fit Plot R Square 0.828159148 0.685847574 0.607309468 3.265807868 R Square Stendard Error Total 10.66550103 Coefficients Standard Evor 0,347279172 .936081493 D.08872967 0.9 9551584 32) Choose correct correlation interpretation: (a) Positive correlation of 0.83- strong corelation. Percentage of variation explained...
Home X Correlation coefficient Calcula x Conduct and interpreta Bivar: X R Variance cakulator X 10:2 Homework X + bocc.instructure.com/courses/20438/assignments/257886 मैं Time Clock Plus MAT 107 8568 > Assignments > 10.2 Homework SUM I 2000 10.2 Homework Home Due Sunday by 11:59pm Points 5 Submitting an external tool Available Jul 7 at 12am. Aug 2 at 11:59pm 27 days Announcements Grades 10.2 Homework Score: 3.5/5 3/5 answered Done Syllabus Modules Question 4 < > B0/1 pt 100 99 Assignments Discussions...
*JUST NEED 3 and 4 ANSWERED THANKS*
1. Explore the data: create a scatterplot
. 1a. Type the data into a blank SPSS spreadsheet. Name
variables as Distance and Snowfall respectively. Go to
Graphs-Legacy Dialogs-Scatter/Dot-Simple Scatter-Define. In the
window that follows, select Distance into X axis and Snowfall into
Y axis. Click on OK.
1b.Double click on the scatter plot to activate it. Double click
on the horizontal axis and select the Scale tab. At Auto, uncheck
all boxes. At...
A)
B)
C)
Based on the data shown below, calculate the correlation coefficient to three decimal places) 19.59 16.71 114.53 7 13.14 11.85 11.17 13 849 7.3 Here is a bivariate data set. 38.7 91.5 25. 6 993 572 36. 4 854 293 218 83.7 Find the correlation coefficient and report it accurate to three decimal places. What proportion of the variation in y can be explained by the variation in the values of x? Report answer as a percentage...
he follo 2. Do heavier cars really use more gasoline? Suppose that a car is chosen at random. Let x be the weight of the car (in pounds), and let y be the miles per gallon (mpg). The following information is based on data taken from Consumer Reports (vol. 62, no. 4). cystolic 3400 5200 21 14 - Weight of Car (in pounds) 2700 4400 3200 4700 2300 4000 y-Miles per Gallon 30 19 24 13 29 17 . Find...
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