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Construct a scatter plot with this data. Do you observe a trend? If so, what type of trend do you observe?

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Construct a scatter plot for Amazon’s net income/loss and sales figures for the period 1995–2015.

Post author By admin
Post date September 7, 2021
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Multiple Regression Analysis

Amazon.com has become one of the most successful online merchants. Two measures of its success are sales and net income/loss figures. The data can be found in the file, Amazon.

Use Excel to complete the following:

Construct a scatter plot for Amazon’s net income/loss and sales figures for the period 1995–2015.
Determine a polynomial model, including its order (or degree), for Amazon’s net income/loss and sales figures.

Use Word to complete the following:

Explain your process of determining the polynomial model
Submit your work in a Word document and attach your Excel file.

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Tags amazon, construct, figures, income, period, sales, scatter

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Use the data below to make a scatter plot Hint: count gridlines (blocks) by 1→

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Post date June 23, 2021
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Math 103 quiz 4 chapter 8 2021c Upload file(s) as “Last Name Quiz 4” etc

Open book & notes, can use calculating device, formula sheets + extra paper. Use formula sheets including Normal distribution (z) tables. If completing problems manually, show work for credit. – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 1. Use this data set { 65, 38, 53, 62, 44, 87, 27, 78, 21, 18, 60, 78, 2, 44 } and find the…

a) median b) mode

( Round answers to a few decimals (1 or 2) Show work if NOT using your calculator) c) mean d) sample standard deviation

bonus 1 (+0.1%) use the above data & find the Range… (+0.1%) & Midrange

2 a) Use the data below to make a scatter plot Hint: count gridlines (blocks) by 1→

x 5 2 1.5 5.5 7 4 3.4

y 1 4 6 2 2.5 1.3 2.7

What kind of linear correlation seems to exist: b) positive, negative, or none?

3. A fish species has normally distributed weights with standard deviation 2.9 and mean = 22.5 lbs. Show these 3 parts for each: ÀF︂ill in the appropriate formula & show the calculated z. ÁNext, round it up (or down) to the closest z-value (2 decimals) listed in the N-distribution tables, and write that value. ÂFind the # using the table (show all 4 digits, % or decimal).

a) What is the percentage (%) of data less than 22? b) what is the % of data greater than 26?

c) what is the % of data between 21 and 28.5?

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Enjoy our bonus services. You can make a free inquiry before placing and your order and paying this way, you know just how much you will pay. Use the data below to make a scatter plot Hint: count gridlines (blocks) by 1→
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Tags below, blocks, count, gridlines, scatter

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Construct a scatter plot in Excel with FloorArea as the independent variable and AssessmentValue as the dependent variable

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Post date June 9, 2021
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The Excel file for this assignment contains a database with information about the tax assessment value assigned to medical office buildings in a city. The following is a list of the variables in the database:

FloorArea: square feet of floor space
Offices: number of offices in the building
Entrances: number of customer entrances
Age: age of the building (years)
AssessedValue: tax assessment value (thousands of dollars)

Use the data to construct a model that predicts the tax assessment value assigned to medical office buildings with specific characteristics.

Construct a scatter plot in Excel with FloorArea as the independent variable and AssessmentValue as the dependent variable. Insert the bivariate linear regression equation and r^2 in your graph. Do you observe a linear relationship between the 2 variables?
Use Excel’s Analysis ToolPak to conduct a regression analysis of FloorArea and AssessmentValue. Is FloorArea a significant predictor of AssessmentValue?
Construct a scatter plot in Excel with Age as the independent variable and AssessmentValue as the dependent variable. Insert the bivariate linear regression equation and r^2 in your graph. Do you observe a linear relationship between the 2 variables?
Use Excel’s Analysis ToolPak to conduct a regression analysis of Age and Assessment Value. Is Age a significant predictor of AssessmentValue?

Construct a multiple regression model.

Use Excel’s Analysis ToolPak to conduct a regression analysis with AssessmentValue as the dependent variable and FloorArea, Offices, Entrances, and Age as independent variables. What is the overall fit r^2? What is the adjusted r^2?
Which predictors are considered significant if we work with α=0.05? Which predictors can be eliminated?
What is the final model if we only use FloorArea and Offices as predictors?
Suppose our final model is:
AssessedValue = 115.9 + 0.26 x FloorArea + 78.34 x Offices
What wouldbe the assessed value of a medical office building with a floor area of 3500 sq. ft., 2 offices, that was built 15 years ago? Is this assessed value consistent with what appears in the database?