question you were asked to create a regression that will predict the amount of saving for...
| question | |||||
| you were asked to create a regression that will predict the amount of saving for 401K predicted by the number of years the employee worked in his life. | |||||
| below is the set of data for 5 employees | |||||
| X= number of years working | Y= saving in 401K | ||||
| 10 | 24 | ||||
| 12 | 27 | ||||
| 8 | 12 | ||||
| 11 | 22 | ||||
| 9 | 15 | ||||
| all questions below need to be claculated manually without using Minitab, you need to submit your calculations as part of the exercise, you may use later minitab to check your manual calculations. | |||||
| 1. what is the best estimate for the saving of n individual if you do npot run a regression | |||||
| 2. what is the COV (x,y) | |||||
| 3. calculate the regression line | |||||
| 4. what is theprediction of saving for person who have 18 years of working | |||||
| 5 what is the weak part in your prediction/ stimate in question 4 | |||||
Homework Answers
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asked to create a regression that will predict the amount of saving
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Regression Analysis Problem #1 The following table shows the sales (in $100,000) of a certain product as a function of...
Regression Analysis Problem #1 The following table shows the sales (in $100,000) of a certain product as a function of the past 10 months and the level of advertisement (in S1,000) for the corresponding months Sales 100 110 107 110 118 120 117122 120 125 Month 2 4 5 7 8 10 Advertisement 1.5 2.1 2,6 2.8 3.5 3.7 3.6 3.4 3.4 2.9 Part A: Considering a simple linear regression of sales vs, time (months), perform the following analysis manually,...
part b Jaaman une Regression Analysis Problem #L The following table shows the sales (in $100,000)...
part b
Jaaman une Regression Analysis Problem #L The following table shows the sales (in $100,000) of a certain product ma fnction of the pat 10 months and the level of advertisement (in $1,000) for the coresponding month 10 I 107 110 118 120 117 1221 120125 100 Sales 7 6 2.1 2.6 2,8 3.4 2.9 4 2 Month 10 3.4 3.5 3.7 36 Advertisement 1.5 Part A: Considering a simple linear regression of sales vs. time (months), perform ths...
If you were to develop a linear regression equation that uses autonomy at work to predict...
If you were to develop a linear regression equation that uses autonomy at work to predict job satisfaction, what would be the Y-Intercept (a) of the regression equation? Use the slope (b) obtained from the previous question to answer this question. Autonomy Job satisfaction (Y) n 8 8 Mean My=4 My 7 Variability SSX-28 SSY - 156 SP-56 Pearson r.85 -10 1 2 pts Question 43 Correlation' is to 'regression' as significance to non significant 'samples are to populations relationship...
Problem Definition: A wholesale supplier wants to predict the average cost associated with shipping orders of...
Problem Definition: A wholesale supplier wants to predict the average cost associated with shipping orders of various sizes. The order sizes and shipping costs for the past twelve months are provided in the table below. Set alpha at .01. Order sizes and shipping costs for last twelve months Size of Orders =X Shipping Costs =Y 1068 4489 1026 5611 767 3290 885 4113 1156 4883 1146 5425 892 4414 938 5506 769 3346 677 3673 1174 6542 1009 5088 Review...
step by step please ? ? QUESTION 04 (20 points) - Simple Linear Regression (SLR) We...
step by step please
? ? QUESTION 04 (20 points) - Simple Linear Regression (SLR) We have the following hypothetical data for the independent variable x (other names: regressor, covariate, or explanatory variable) and the dependent variable y (regressand). Obs. х y x² ху 1 8.34 0.75 ? ? 2 3.21 2.37 10.30410 3 5.96 3.80 ? 1.27 4.40 ? 5.58800 5 4.28 2.52 ? TOTAL ? ? ? (a) Use Excel to draw a y-x scatter diagram with y...
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Suppose you were presented with the following prediction regression equation: Yhat = 30,000 + 2,000 (X) where the dependent variable is annual salary and the independent variable is years on the job. Interpret the value of the y-intercept (i.e., constant) and the value of the slope. Be as thorough as possible in your answer!
We were unable to transcribe this imageWe were unable to transcribe this imageUse the regression line to estimate the number of trials it would take to leam these tricks if a dolphin received...
We were unable to transcribe this imageWe were unable to transcribe this imageUse the regression line to estimate the number of trials it would take to leam these tricks if a dolphin received five treats per trick. Y for X _ 5 would be The head dolphin trainer wants to save money by cutting down on the number of treats the dolphins get. She has asked you to use the least-squares regression line to predict how fast the dolphins can...
Regression a. Find the equation of the regression line? b. Create a scatterplot of the data....
Regression
a. Find the equation of the regression
line?
b. Create a scatterplot of the data.
c. Identify a characteristic of the data that is ignored
by the regression line.
PLEASE USE TI83 OR TI84 CALCULATIONS IN YOUR REPLY AS
THAT IS WHAT IS INSTRUCTED IN THE TEXTBOOK AND EXAMS. I WILL ONLY
RATE ANSWERS WITH THE GRAPHIC CALCULATOR STEPS. THANK
YOU!
Use the given data to find the equation of the regression line. Examine the scatterplot and identify a...
QUESTION 12 Below is some of the regression output from a regression of the amount various...
QUESTION 12 Below is some of the regression output from a regression of the amount various customers paid for a new car (expressed in dollars) versus the age of the customer (expressed in years), the number of previous cars the customer had purchased from the dealership in the past, a dummy variable indicating the gender of the customer (=1 for a Man and = 0 for a woman), and an interactive term the multiplies the age of the customer with...
please show all steps thank you :)! Multiple Regression Analysis 5. (7 marks) The population regression model under stud...
please show all steps thank
you :)!
Multiple Regression Analysis 5. (7 marks) The population regression model under study is: where educt is years of schooling for the t'th working person sibst is number of siblings for the t'th working person meduct is mother's years of schooling for the t'th working person feduct is father's years of schooling for the t'th working person. i What are the probable signs of B1, P2 and ß3? Explain ii Using the data in...
Regression Analysis Problem #1 The following table shows the sales (in $100,000) of a certain product as a function of the past 10 months and the level of advertisement (in S1,000) for the corresponding months Sales 100 110 107 110 118 120 117122 120 125 Month 2 4 5 7 8 10 Advertisement 1.5 2.1 2,6 2.8 3.5 3.7 3.6 3.4 3.4 2.9 Part A: Considering a simple linear regression of sales vs, time (months), perform the following analysis manually,...
part b
Jaaman une Regression Analysis Problem #L The following table shows the sales (in $100,000) of a certain product ma fnction of the pat 10 months and the level of advertisement (in $1,000) for the coresponding month 10 I 107 110 118 120 117 1221 120125 100 Sales 7 6 2.1 2.6 2,8 3.4 2.9 4 2 Month 10 3.4 3.5 3.7 36 Advertisement 1.5 Part A: Considering a simple linear regression of sales vs. time (months), perform ths...
If you were to develop a linear regression equation that uses autonomy at work to predict job satisfaction, what would be the Y-Intercept (a) of the regression equation? Use the slope (b) obtained from the previous question to answer this question. Autonomy Job satisfaction (Y) n 8 8 Mean My=4 My 7 Variability SSX-28 SSY - 156 SP-56 Pearson r.85 -10 1 2 pts Question 43 Correlation' is to 'regression' as significance to non significant 'samples are to populations relationship...
step by step please
? ? QUESTION 04 (20 points) - Simple Linear Regression (SLR) We have the following hypothetical data for the independent variable x (other names: regressor, covariate, or explanatory variable) and the dependent variable y (regressand). Obs. х y x² ху 1 8.34 0.75 ? ? 2 3.21 2.37 10.30410 3 5.96 3.80 ? 1.27 4.40 ? 5.58800 5 4.28 2.52 ? TOTAL ? ? ? (a) Use Excel to draw a y-x scatter diagram with y...
We were unable to transcribe this imageWe were unable to transcribe this imageUse the regression line to estimate the number of trials it would take to leam these tricks if a dolphin received five treats per trick. Y for X _ 5 would be The head dolphin trainer wants to save money by cutting down on the number of treats the dolphins get. She has asked you to use the least-squares regression line to predict how fast the dolphins can...
Regression
a. Find the equation of the regression
line?
b. Create a scatterplot of the data.
c. Identify a characteristic of the data that is ignored
by the regression line.
PLEASE USE TI83 OR TI84 CALCULATIONS IN YOUR REPLY AS
THAT IS WHAT IS INSTRUCTED IN THE TEXTBOOK AND EXAMS. I WILL ONLY
RATE ANSWERS WITH THE GRAPHIC CALCULATOR STEPS. THANK
YOU!
Use the given data to find the equation of the regression line. Examine the scatterplot and identify a...
please show all steps thank
you :)!
Multiple Regression Analysis 5. (7 marks) The population regression model under study is: where educt is years of schooling for the t'th working person sibst is number of siblings for the t'th working person meduct is mother's years of schooling for the t'th working person feduct is father's years of schooling for the t'th working person. i What are the probable signs of B1, P2 and ß3? Explain ii Using the data in...
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