Question

a. What is the Sample Regression Equation? b. Which of the independent variables are significant? Why?...

a. What is the Sample Regression Equation? b. Which of the independent variables are significant? Why? Use α = 0.10 in ALL questions. Use only the p-value to explain your answers (No need to go to tables). c. Test the overall significance of the model by relying on F Statistic. d. What is the value of adjusted r-square? e. Comment on the Normality assumption for the residuals for this model. In other word, has the normality assumption been satisfied? Explain your answer (Hint: you need to run Excel’s Histogram feature for Column of the Residuals). f. Do you see any Indication of Autocorrelation? Using Excel Formula commands, calculate the value of the Durbin-Watson test statistics in Excel g. Do you see any evidence of Multicollinearity?

y   x1   x2   x3   x4   x5
109000   0.19   133   7300   60.9631036   0.006859
155000   0.41   13   18700   96.72900289   0.068921
86060   0.11   20   15000   86.66025617   0.001331
120000   0.68   31   14000   83.75858165   0.314432
153000   0.4   33   23300   108.0115735   0.064
170000   1.21   23   14600   85.50730963   1.771561
90000   0.83   36   22200   105.4419271   0.571787
122900   1.94   4   21200   102.9660138   7.301384
325000   2.29   123   12600   79.75901203   12.008989
120000   0.92   1   22300   105.595928   0.778688
85860   8.97   13   4800   49.05609035   721.734273
97000   0.11   153   3100   40.32988966   0.001331
127000   0.14   9   300   12.42980289   0.002744
89900   2   88   2500   35.9722115   8
155000   0.13   9   300   12.42980289   0.002197
253750   2   7   49800   157.8084282   8
60000   0.21   82   8500   65.50572494   0.009261
87500   0.88   17   19400   98.53172078   0.681472
112000   1   12   8600   65.62011887   1
104900   0.43   21   5600   53.01414905   0.079507
148635   0.32   1   6200   55.68213358   0.032768
150000   0.03   24   5100   50.61620294   0.000027
90400   0.36   16   5200   51.06858134   0.046656
248800   4   28   5500   52.57375771   64
135000   1.83   126   6000   55.34437641   6.128487
145000   3   26   4500   47.57099957   27
457000   0.43   53   2700   37.10121292   0.079507
140000   0.44   56   19400   98.63062405   0.085184
130000   1.24   51   24800   111.4697268   1.906624
187000   0.46   3   15200   87.18658154   0.097336
229000   0.87   9   41100   143.3684066   0.658503
227000   1.8   201   25500   113.3600459   5.832
179900   0.46   1   15200   87.18084652   0.097336
169900   0.91   19   20200   100.5460094   0.753571
209900   0.46   1   15200   87.18084652   0.097336
169900   0.59   10   17300   93.03225247   0.205379
293000   7.24   43   36600   135.3569355   379.503424
24590   0.19   2   20700   101.7398644   0.006859
157000   0.46   45   20200   100.6106356   0.097336
195000   0.41   32   27100   116.4731729   0.068921
150000   0.78   54   24500   110.8016245   0.474552
234900   0.89   9   41600   144.2376511   0.704969
279550   1.34   60   44400   149.0972837   2.406104
246500   1   70   17100   92.65527508   1
124000   1   98   15500   88.3119471   1
138000   0.27   54   8900   66.91038783   0.019683
290000   0.71   73   61000   174.7469599   0.357911
108000   0.9   48   19000   97.59098319   0.729
134900   0.24   10   8000   63.28506933   0.013824
64500   0.06   16   1600   28.42534081   0.000216
142000   0.55   20   13800   83.12640976   0.166375
125000   0.34   32   11100   74.60562981   0.039304
88000   0.19   15   3400   41.32190702   0.006859
135000   0.23   135   8100   64.16774891   0.012167
90000   0.07   14   1800   30.11644069   0.000343
90100   0.09   15   2400   34.74910071   0.000729
126900   0.25   10   8400   64.84597135   0.015625
175000   0.47   15   27200   116.6511894   0.103823
158000   0.36   10   12100   77.81388051   0.046656
92000   0.07   14   1800   30.11644069   0.000343
82800   0.11   225   3900   45.41475531   0.001331
140000   0.23   25   8300   64.5174395   0.012167
171000   3.16   15   24100   109.8066483   31.554496
200640   0.08   4   32000   126.4990119   0.000512
139000   0.57   30   7500   61.35959583   0.185193
225000   0.5   12   15300   87.49857142   0.125
182000   1   16   26600   115.3603051   1
208767   0.5   8   32000   126.5069168   0.125
186000   0.55   17   4400   46.99468055   0.166375
93000   0.1   14   2600   36.15245497   0.001
257386   0.5   90   32000   126.6688596   0.125
161000   0.31   10   10400   72.14568594   0.029791
92000   0.28   18   6300   56.20498199   0.021952
211002   0.06   12   32000   126.5148213   0.000216
115000   0.06   14   1600   28.40774542   0.000216

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Answer #1

(i)

Y = 140338.804455852 + 25546.2055908319 X1 + 82.8778443929468 x2 + 5.27897193819309 x3 -1072.29306616854 X4-326.167534236161 x5

(ii) If p value < 0.10 then the variable is significant. Thus x1,x3 and x5 are significant.

(iii) F statistic is 6.54 and p value is 0. Thus the model is significant.

(iv)

Adjusted R Square 0.272520892

Data ->Data Analysis->Regression--> Input:

The output is:

Please let me know in comments in case anything is unclear. Will reply ASAP. Do upvote if satisfied!

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