Homework Answers
solution:
it is shown that in the graph that the two variable adj score and effectiveness are positively strongly correlated with each other.
when two variables are strongly positively correlated with each other then correlation cofficient is very close to 1 or 0.99
so possible correlation cofficient in this situation will be 0.98141 because all other values are not corresponding with the relationship given in the graph so
correct correlation cofficient would be 0.98141
b)
slope represent the consistent change in the value of Y as th value of X changes
so correct slope for the given situation will be 0.01941
c) Y intercept is the average value of Y when all X = 0
Y intercept to the current situation is close to 1.00713
Add Answer to:
effectiveness vs adjScore effectiveness -150 50 0 50 100 150 adj Score The correlation coefficient between...
A)What is the value of the correlation coefficient? B)What is the value of the coefficient of...
A)What is the value of the correlation coefficient?
B)What is the value of the coefficient of determination?
C)When finding the least-squares regression for this line, what
is the slope?
D)When finding the least-squares regression for this line, what
is the y-intercept?
E)Give the equation for the least-squares regression line.
F)Interpret the slope for this equation.
G)Is it reasonable to give an interpretation of your
y-intercept? If yes, please give one. If not, explain why.
A movie theater decides to examine...
Compute the correlation coefficient between GPA and Study Hours using the Z-score products from the table....
Compute the correlation coefficient between GPA and Study Hours
using the Z-score products from the table. Show work.
Find the slope coefficient for the regression line (assume that
GPA (y) is a function of HOURS (x)).
Find the intercept for the regression line.
Write the regression model.
Predict the GPA of someone who studies 10 hours per week.
Please someone help with this. I have my own answers but I
believe they're wrong.
The following table shows the hour studied...
Given a correlation coefficient (r) of 0.7216, mean of x-bar = 140.5, standard deviation of x...
Given a correlation coefficient (r) of 0.7216, mean of x-bar = 140.5, standard deviation of x (sx) = 6.4, mean of y-bar = 128.3, and standard deviation of y (sy) = 8.2. Find the slope of the regression line. Find the y-intercept of the line. Write the equation of the line.
Please explain in detail and provide answers Linear Regression & Correlation Coefficient Practice Would you consider...
Please explain in detail and provide answers
Linear Regression & Correlation Coefficient Practice Would you consider the data to be accurate, precise or both? Justify. 1. 10 T 2. The table below shows the percentage of females in the U.S. labor force at various times throughout history Years after 1900 | 50 Percentage | 60 T70- T80-T90 8.1 42.5 45.3 100 52.0 Enter the data into your calculator or excel and give the equation. Round slope & y-intercept to 2...
If the correlation between variables x and y is r = .50, then the coefficient of...
If the correlation between variables x and y is r = .50, then the coefficient of determination is a. .50. b. 0. c. 1.00. d. .25.
We know that a researcher calculated a correlation coefficient for the association between smoking and lung...
We know that a researcher calculated a correlation coefficient for the association between smoking and lung cancer rate is 0.737 using the data in Table 1. In addition, the researcher have estimated x ̅ = 603.64, y ̅ = 20.55, s_x= 378.451, s_y= 11.725, and r = 0.737. a. Calculate the slope coefficient b for y ̂ = a + bx. Round the answer to the nearest 10,000th b= b. Calculate the intercept coefficient a for y ̂ = a...
1) Discuss how the coefficient of correlation and coefficient of determination apply to analyzing the relationship...
1) Discuss how the coefficient of correlation and coefficient of determination apply to analyzing the relationship in a business analysis. 2)Discuss each of the components in the regression equation: Y prime, intercept, slope, and the independent variable x, as they relate to making business predictions. Need detail answer to the question
correlation and regression 210 Statistics EXTRA CREDIT Correlation and Regression Formulas written Assignment 1. Follow the...
correlation and regression
210 Statistics EXTRA CREDIT Correlation and Regression Formulas written Assignment 1. Follow the instructions below to calculate the correlation coefficient and least squares regression line for the data set below. Z 22,- The sample means and sample standard deviations for the two variables are listed below: X = 4 x = 2 3 =5 Sy = 1 The linear correlation coefficient is = 52. Calculate this correlation coefficient using the steps below: (a) First, complete the columns...
4. Educational researchers desired to find out if a relationship exists between the av- erage SAT...
4. Educational researchers desired to find out if a relationship exists between the av- erage SAT verbal score and the average SAT mathematical score. Several states were randomly selected, and their SAT average scores are recorded below. The fol- Table 1: SAT Scores X: Verbal 526 504 594 585 503 589 Y: Math 530 522 606 588 517 589 lowing quantities have been computed for your convenience: x = 3301, y 3352, 2x = 1825683, y2 = 1880574 and Dry...
The correlation between arm circumference and weight is 0.961804 After graphing the two, the slope =...
The correlation between arm circumference and weight is 0.961804 After graphing the two, the slope = 0.236 and the intercept = 13.715, r2 = 0.9251 1. Build a regression model with the correlation of arm circumference and weight. Write the regression equation below. 1b. is the slope significant? why or why not? 1c. Interpret the slope. 1d. The coefficient of determination = 0.9251, interpret the coefficient of determination.
A)What is the value of the correlation coefficient?
B)What is the value of the coefficient of determination?
C)When finding the least-squares regression for this line, what
is the slope?
D)When finding the least-squares regression for this line, what
is the y-intercept?
E)Give the equation for the least-squares regression line.
F)Interpret the slope for this equation.
G)Is it reasonable to give an interpretation of your
y-intercept? If yes, please give one. If not, explain why.
A movie theater decides to examine...
Compute the correlation coefficient between GPA and Study Hours
using the Z-score products from the table. Show work.
Find the slope coefficient for the regression line (assume that
GPA (y) is a function of HOURS (x)).
Find the intercept for the regression line.
Write the regression model.
Predict the GPA of someone who studies 10 hours per week.
Please someone help with this. I have my own answers but I
believe they're wrong.
The following table shows the hour studied...
Please explain in detail and provide answers
Linear Regression & Correlation Coefficient Practice Would you consider the data to be accurate, precise or both? Justify. 1. 10 T 2. The table below shows the percentage of females in the U.S. labor force at various times throughout history Years after 1900 | 50 Percentage | 60 T70- T80-T90 8.1 42.5 45.3 100 52.0 Enter the data into your calculator or excel and give the equation. Round slope & y-intercept to 2...
correlation and regression
210 Statistics EXTRA CREDIT Correlation and Regression Formulas written Assignment 1. Follow the instructions below to calculate the correlation coefficient and least squares regression line for the data set below. Z 22,- The sample means and sample standard deviations for the two variables are listed below: X = 4 x = 2 3 =5 Sy = 1 The linear correlation coefficient is = 52. Calculate this correlation coefficient using the steps below: (a) First, complete the columns...
4. Educational researchers desired to find out if a relationship exists between the av- erage SAT verbal score and the average SAT mathematical score. Several states were randomly selected, and their SAT average scores are recorded below. The fol- Table 1: SAT Scores X: Verbal 526 504 594 585 503 589 Y: Math 530 522 606 588 517 589 lowing quantities have been computed for your convenience: x = 3301, y 3352, 2x = 1825683, y2 = 1880574 and Dry...
Most questions answered within 3 hours.
-
In the United States, laws mandating that companies be
responsible for take back of electronic wastes...
asked 1 minute ago -
URGENT PLEASE HELP. could you make it easy to understand and in
C++ thanks
1. (30...
asked 9 minutes ago -
Case Study. Multi Projects
Multi Projects, Inc., is a well-established consulting firm
with 400 employees. It...
asked 14 minutes ago -
An 8.00 kg point mass and a 15.0 kg point mass are held in place
50.0...
asked 15 minutes ago -
What would cause my program to execute the first if statement no
problem, but the second...
asked 16 minutes ago -
The Department of Transportation (DOT) would like to test the
hypothesis that the average age of...
asked 29 minutes ago -
Suppose Hoosiers, a specialty clothing store, rents space at a
local mall for one year, paying...
asked 31 minutes ago -
2. Your client from number 1 above is absolutely ecstatic about
the verdict in the immunization...
asked 28 minutes ago -
Some
critics of marketing have suggested that market segmentation and
target marketing lead to an unnecessary...
asked 32 minutes ago -
PART A: An electric current flows through a resistor. Which side
will have the higher electric...
asked 36 minutes ago -
An ideal heat engine has an efficiency of 18.9 percent. It
operates between two heat reservoirs...
asked 36 minutes ago -
3.11 (Modified Account Class) Modify class Account (Fig. 3.8 )
to
provide a method called withdraw...
asked 55 minutes ago