# I need help with my regression analysis homework.

Step 1

Don't use plagiarized sources. Get Your Custom Essay on
I need help with my regression analysis homework.
For as low as \$13/Page

Download the Regression Analysis Practice document (Excel file).

Step 2

Make sure you have the Data Analysis ToolPak add-in for your Excel. You can do that by going to the Data tab and searching for Data Analysis. If it does not appear, you will need to download it. The steps to download add-ins varies with each version of Excel. Here are the steps for the 2007 version:

·         Click on the Excel icon in the upper-left corner of your spreadsheet.

·         Click on Excel Options.

·         Along the left-side menu, click on Add-Ins.

·         Select Analysis ToolPak and follow the instructions.

Step 3

At the bottom, click on the “Demand for Jet Fuel” tab. The sample demand equation is estimated using this data set, and the results are shown.

Step 4

Use the procedure described to estimate the demand for gasoline using the same steps identified in the example below. Sample answers are based on the “Demand for Jet Fuel” data.

1.     Evaluate adjusted R2.

The adjusted R2 is 0.778421. It indicates that approximately 78% of the variation in the demand for jet fuel across states is explained by the three independent variables—price, state GDP, and state population.

2.     Evaluate each of the independent variables using a t-test.

Table 1 provides the results of the t-tests for each of the independent variables.

 Coefficients Standard Error T-Stat P-Value Intercept -18.4498 45.28617 -0.40741 0.68556 Price 0.138429 2.788582 0.049641 0.960619 GDP 0.170079 0.039165 4.342646 7.45E-05 Population 0.005281 0.001791 2.948036 0.004967

Table 1: T-Test Analysis

To assist use the Student t-Value Calculator:  http://www.danielsoper.com/statcalc3/calc.aspx?id=10

The degrees of freedom are 47, and the probability is 0.05. The critical value is approximately 2. If the absolute value of the t-statistic is greater than 2, the null hypothesis can be rejected. The P-value results can be used to determine whether to reject each of the following hypotheses.

Using the null hypothesis that each of the estimated coefficients is not significantly different from zero, and a 5% probably level (or a 5% probability of obtaining the test statistic as large or larger as the one obtained if the true value is in fact zero), the coefficients for GDP and Population are significant (reject the null hypothesis that the true values are 0), while coefficients for the intercept and price are not significant (do not reject the null hypothesis that the true values of the coefficients are zero).

Price:

(a)          H0: βp = 0; HA; βp ¹ 0                       Do not reject at the 5% level (P-value > 0.05)

GDP:

(b)          H0: βgdp = 0; HA; βgdp ¹ 0             Reject at the 5% level (P-value < 0.05)

POP:

(c)           H0: βpop = 0; HA; βpop ¹ 0            Reject at the 5% level (P-value < 0.05)

3.     Perform an f-test.

H0: βp = βgdp = βpop = 0;

HA: at least one β is not equal to zero

Use the analysis of variance (ANOVA) information given in the table below.

 ANOVA df SS MS F Significance F Regression 3 368163.7 122721.2 59.55115 4.83988E-16 Residual 47 96856.2 2060.77 Total 50 465019.9

Table 2: F-Test Analysis

F = 59.5515

Critical value

Critical F-Value Calculator:

http://www.danielsoper.com/statcalc3/calc.aspx?id=4

F(3,47) = 2.80235519

Since the 59.5515 > 4.00, reject the null hypothesis. At least one of the β’s is not equal to zero. You can also use the “Significance of F” information, which indicates that the critical value would need to be essentially zero to not reject the null hypothesis.

Step 5

Submit your regression results and answers to the questions given using the Assignment link.

 Trillions of BTUs Price per Million BTU Billions of Dollars Millions Quantity Price GDP Population Alabama 325,2 21,09 154,1 4 785 Alaska 34,8 27,17 45 714 Arizona 323,6 21,85 228,5 6 413 Arkansas 176,2 21,34 91,8 2 922 California 1 835,70 24,05 1 731,80 37 338 Colorado 260,8 21,35 235,2 5 048 Connecticut 184,7 22,99 211,3 3 575 Delaware 54,7 21,95 56,2 605 Dist. of Col. 12,7 23,08 90,7 605 Florida 998,3 21,17 673,4 18 839 Georgia 599,9 20,41 362 9 712 Hawaii 50,3 27,17 59,3 1 363 Idaho 82 23,01 50,7 1 571 Illinois 600,3 21,92 581,3 12 842 Indiana 369,6 21,18 245,4 6 491 Iowa 195,1 21,54 127,7 3 050 Kansas 146,1 21,39 114 2 859 Kentucky 272,9 21,9 144,6 4 347 Louisiana 280,4 21,2 195,2 4 545 Maine 83,2 22,85 46 1 327 Maryland 329,3 22,05 264,9 5 786 Massachusetts 344,3 22,17 342,1 6 555 Michigan 558,9 21,4 344,9 9 877 Minnesota 310,7 22,32 243,4 5 311 Mississippi 201,7 21,16 87,1 2 970 Missouri 392,4 20,9 217,3 5 996 Montana 60,2 22,91 31,8 991 Nebraska 103,8 22,13 79,7 1 830 Nevada 134 22,75 111,6 2 704 New Hampshire 88,5 22,19 54,6 1 317 New Jersey 517,6 21,26 438,7 8 800 New Mexico 110,9 22,01 72,8 19 395 New York 712,4 22,32 1 034,30 9 560 North Carolina 544,5 21,99 380,6 675 North Dakota 45,6 22,87 31,3 675 Ohio 618 22,01 426,1 11 538 Oklahoma 232,4 20,95 133,5 3 760 Oregon 187 23,33 166,7 3 838 Pennsylvania 633,9 22,54 505,9 1 053 Rhode Island 48,1 22,79 44 1 053 South Carolina 325,6 20,69 145,1 4 637 South Dakota 51,7 22,29 36,3 817 Tennessee 387,9 21,26 228,7 6 357 Texas 1 511,20 21,08 1 106,20 25 253 Utah 125,3 22,9 102,8 2 775 Vermont 40,5 22,96 23,1 626 Virginia 499,9 21,35 380,6 8 024 Washington 328,6 24,05 306,6 6 743 West Virginia 105,4 23,05 56 1 854 Wisconsin 313,9 22,63 221,3 5 692 Wyoming 40,1 21,45 34,4 565

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

## Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.