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雷达卡
非常感谢了！！！！Question 1
The gross incomeand tax paid by a cross-section of 30 companies in 1988 and 1989 is given inthe file tax.dat.
a)
Use the data to estimate therelationship
t tax=β1+β2income+e
For each of the years 1988 and 1989.
b) 1. Give interpretations of the twoestimates of β2.
c) 2. Find the average income foreach year and predict the tax paid for each average income. Compare the averageand marginal rates.
d) 3. Pool the observations from thetwo years of data and use the resulting 60 observations to estimate onetax-income relationship. Compare the estimates for β1and β2, and the estimated variances with those from the separateequations. What implicit assumptions are you making when you pool the two setsof observations?
1988 1988 1989 1989
Income Tax Income Tax
9.215 1.643 9.518 2.125
2.047 0.413 2.068 0.565
9.989 1.752 9.992 2.221
8.321 1.408 8.515 1.905
4.588 0.838 4.389 0.943
4.736 0.748 5.015 1.051
3.596 0.577 3.811 0.819
4.830 0.752 4.939 1.015
4.508 0.761 4.539 1.096
7.506 1.331 7.806 1.654
4.052 0.548 4.583 0.836
6.015 1.121 6.345 1.602
7.775 1.316 8.227 1.877
3.105 0.503 3.129 0.698
2.215 0.514 2.691 0.246
5.676 1.057 6.015 1.146
5.554 0.942 5.702 1.221
5.360 0.803 5.150 0.920
10.394 1.902 10.579 2.150
3.473 0.513 3.341 0.570
4.022 0.868 4.400 0.917
6.119 1.067 6.682 1.157
3.362 0.559 3.487 0.678
7.203 1.318 7.557 1.637
3.874 0.580 3.929 0.515
7.259 1.138 7.636 1.721
2.130 0.414 2.169 0.433
7.528 1.331 7.862 1.461
9.578 1.662 9.997 2.166
2.015 0.351 2.259 0.447
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