The accompanying data file shows information on 264 initial public offering (IPO) firms. The data include the

Question:

The accompanying data file shows information on 264 initial public offering (IPO) firms. The data include the initial return (Initial), price revision (Revision), and whether or not the firm is high-tech.

a. Estimate a model with the initial return as the response variable and the price revision and the high-tech dummy variable as the explanatory variables.

b. Reestimate the model with price revision along with the dummy variable and the product of the dummy variable and the price revision.

c. Which of these models is the preferred model? Explain. Use this model to estimate the initial return for a high-tech firm with a 15% price revision. Compute the corresponding initial return for a firm that is not high-tech.

InitialRevisionHigh-Tech
33.937.14No
18.68-26.39No
2.423.13No
6.29-46.15Yes
0.00-12.50No
2.730.00Yes
14.430.00Yes
0.00-21.74No
0.00-17.65No
0.00-5.88No
1.22-5.26No
11.117.14No
7.954.76No
13.4611.11Yes
1.67-45.45Yes
16.50-33.33Yes
5.255.26Yes
2.00-41.67Yes
4.91-15.38No
16.6712.50Yes
-24.38-19.76No
-7.7812.50No
33.9333.33Yes
8.063.33No
-10.00-9.09Yes
1.33-42.31Yes
0.10-23.08Yes
0.00-19.30No
15.917.32No
12.860.00Yes
11.620.00No
8.88-11.11Yes
0.08-13.33No
12.263.33No
4.37-27.27Yes
13.750.00No
3.470.00Yes
11.945.88No
28.2413.33No
39.7525.00No
22.867.69Yes
0.00-9.52No
3.62-20.00Yes
19.18-29.17No
9.215.56No
0.000.00No
12.506.67Yes
-1.21-7.17No
15.5211.54Yes
0.00-0.59Yes
0.87-14.81No
0.10-16.67Yes
11.437.69Yes
0.00-7.14No
0.85-7.14No
0.00-27.27No
0.42-7.69Yes
33.5026.32No
8.077.69No
2.08-25.00Yes
7.14-22.22Yes
0.00-5.01No
6.06-2.94No
26.5818.75No
36.3637.50Yes
3.71-41.67Yes
16.903.57No
2.060.00No
33.3920.00No
4.21-6.67Yes
0.38-18.75No
0.670.00No
15.388.33Yes
0.00-22.45No
2.00-27.27Yes
23.5313.33Yes
-13.46-18.75Yes
0.00-12.50No
0.17-7.69Yes
13.105.00No
23.5313.33Yes
10.67-42.31Yes
36.929.09No
10.34-42.00No
10.91-15.38No
0.330.00No
0.00-20.00No
0.04-11.54No
0.00-21.88Yes
5.36-3.45No
5.3637.93No
42.8610.53Yes
15.453.57No
15.630.00No
35.7140.00Yes
0.00-29.73Yes
5.00-5.62No
6.940.00No
25.006.67No
-2.82-11.36No
10.596.25No
17.65-30.04Yes
11.675.88No
15.67-18.18Yes
5.313.57Yes
6.43-6.67No
15.79-2.56No
2.31-7.14No
6.58-7.69No
7.594.29No
1.73-7.50Yes
0.57-6.67Yes
0.000.00No
0.00-23.53No
7.29-36.36Yes
35.7140.00Yes
0.00-28.89No
20.636.67Yes
19.6421.74No
35.7116.67Yes
-7.36-21.74No
43.7514.29Yes
35.5716.67No
7.333.45No
0.00-10.53No
6.250.00No
0.00-7.14Yes
31.137.14No
0.00-16.67No
1.11-30.77Yes
13.71-22.22Yes
2.50-9.09Yes
0.00-13.33No
40.38-46.91Yes
1.937.69Yes
0.00-20.00No
19.23-10.34No
24.469.40No
9.628.33No
1.44-0.71Yes
-4.00-9.09No
0.07-6.25No
12.162.78No
6.886.67Yes
0.43-41.67Yes
15.690.00No
0.0420.42No
0.00-25.00No
7.14-50.00Yes
2.10-23.08Yes
10.710.00Yes
3.85-53.57Yes
20.002.94No
0.10-10.19Yes
2.60-16.67Yes
10.00-4.76No
11.360.00No
21.0518.75No
0.25-20.00No
17.716.25Yes
-1.254.92No
2.14-6.67Yes
0.00-7.69Yes
2.50-7.69Yes
8.007.14No
0.004.55No
21.9510.81No
5.0010.53No
0.000.00No
0.12-33.33Yes
38.64-42.00Yes
0.08-25.00Yes
36.7927.27Yes
4.00-8.33Yes
1.88-27.27No
0.45-8.33No
13.862.33Yes
2.00-3.38Yes
-0.14-6.67No
14.53-28.52No
2.86-9.97No
0.0013.04No
3.85-7.14No
13.4218.75No
0.00-6.25No
15.634.35No
11.67-22.48Yes
8.70-4.17Yes
1.890.00No
16.67-16.67Yes
4.29-6.67Yes
2.000.00No
13.066.25Yes
0.07-12.50No
13.460.00No
1.43-4.55No
3.00
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