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1Á¶: ±èµµÀ±, ¼±¤¹Î, ³ëÁöÀ±
2Á¶: ±è¿ëÇö, Àü¿µ¾Æ, °Áö¿õ
3Á¶: ¹Úº¸°æ, ¿À¹ÌÇý, ±è¼ö¿µ
4Á¶: ¹ÚÁÖ¿¬, ¿ÀÀº½Ç, ÀÌ´Ù¿î, ¹ÚÈñ¼®
5Á¶: ÀÌÈ¿¹Î, À̼±Çü, À̽žÆ, ¸®¿ë½Ä
±³Àç: Wooldridge. Introductory Econometrics. ¿¬Èñ°ü º¹»ç½Ç.
°úÁ¦ 1 (11¿ù 5ÀÏ)
Appendix A, B, CÀÇ ³»¿ë¸¦ ¹ßÇ¥ÇÏ°í ¹®Á¦¸¦ ¼ö¾÷ ½Ã°£ Áß¿¡ Ä¥ÆÇ¿¡ Ç®¾îº¸¿©¾ß ÇÕ´Ï´Ù.
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1Á¶: A2, A3, A4 A1, A2, B9, B10, C7, C8
2Á¶: A5, B1, B2 A3, A4, B7, B8, C9, C10
3Á¶: B3, B4, B5 A5, A6, B5, B6, C1, C2,
4Á¶: C1, C2, C3 A7, A8, B3, B4, C3, C4
5Á¶: C4, C5, C6 A9, B1, B2, C5, C6
(extra credit) Prove the unbiasedenss of sample variance. ÀÌ ¹®Á¦¸¦ ¹Ì¸® Ç®¾î¿Í ¼ö¾÷ ½Ã°£ Áß¿¡ Ä¥ÆÇ¿¡ Áõ¸íÇÏ´Â Çлý¿¡°Ô´Â extra creditÀÌ ÁÖ¾îÁý´Ï´Ù.
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µû¶ó¼ 11¿ù 5ÀÏ¿¡ ÅäÀÇÇÏ°Ô µÉ Appendix A, B, C¿¡ ´ëÇÑ ½ÃÇèÀº 11¿ù 11ÀÏ 7½Ã¿¡ ÀְԵ˴ϴÙ.
Wooldridge STATA Data Set
½ÃÇè °á°ú 1 (Appendix)
| . tab exam_1 |
| exam_1 |
Freq. Percent |
Cum. |
|
| 6.25 |
1 5.88 |
5.88 |
| 7.8125 |
1 5.88 |
11.76 |
| 12.5 |
1 5.88 |
17.65 |
| 14.0625 |
1 5.88 |
23.53 |
| 16.5625 |
1 5.88 |
29.41 |
| 18.125 |
1 5.88 |
35.29 |
| 20.3125 |
1 5.88 |
41.18 |
| 21.875 |
1 5.88 |
47.06 |
| 27.5 |
1 5.88 |
52.94 |
| 31.25 |
1 5.88 |
58.82 |
| 37.5 |
1 5.88 |
64.71 |
| 37.8125 |
1 5.88 |
70.59 |
| 46.875 |
1 5.88 |
76.47 |
| 48.125 |
1 5.88 |
82.35 |
| 52.5 |
1 5.88 |
88.24 |
| 64.06 |
1 5.88 |
94.12 |
| 64.6875 |
1 5.88 |
100.00 |
|
| Total |
17 100.00 |
| . summ exam_1, d |
|
exam_1 |
|
|
| Percentiles |
Smallest |
| 1% 6.25 |
6.25 |
| 5% 6.25 |
7.8125 |
| 10% 7.8125 |
12.5 |
Obs |
17 |
| 25% 16.5625 |
14.0625 |
Sum of Wgt. |
17 |
| 50% 27.5 |
Mean |
31.04765 |
| Largest |
Std. Dev. |
18.85359 |
| 75% 46.875 |
48.125 |
| 90% 64.06 |
52.5 |
Variance |
355.4577 |
| 95% 64.6875 |
64.06 |
Skewness |
.4529406 |
| 99% 64.6875 |
64.6875 |
Kurtosis |
1.99472 |
| . |
tab exam_2 |
|
exam_2 Freq. |
Percent |
Cum. |
|
|
| 2.5 1 |
5.88 |
5.88 |
| 5 2 |
11.76 |
17.65 |
| 10 1 |
5.88 |
23.53 |
| 11.5 1 |
5.88 |
29.41 |
| 12.5 1 |
5.88 |
35.29 |
| 13.5 1 |
5.88 |
41.18 |
| 17.5 1 |
5.88 |
47.06 |
| 18 1 |
5.88 |
52.94 |
| 20 2 |
11.76 |
64.71 |
| 23 1 |
5.88 |
70.59 |
| 39 1 |
5.88 |
76.47 |
| 42.5 1 |
5.88 |
82.35 |
| 50 1 |
5.88 |
88.24 |
| 57.5 2 |
11.76 |
100.00 |
|
|
| Total 17 |
100.00 |
| . summ exam_2, d |
|
exam_2 |
|
|
| Percentiles |
Smallest |
| 1% 2.5 |
2.5 |
| 5% 2.5 |
5 |
| 10% 5 |
5 |
Obs |
17 |
| 25% 11.5 |
10 |
Sum of Wgt. |
17 |
| 50% 18 |
Mean |
23.82353 |
| Largest |
Std. Dev. |
18.33281 |
| 75% 39 |
42.5 |
| 90% 57.5 |
50 |
Variance |
336.0919 |
| 95% 57.5 |
57.5 |
Skewness |
.7702658 |
| 99% 57.5 |
57.5 |
Kurtosis |
2.213395 |
|
| . tab we_3 |
| we_3 |
Freq. Percent |
Cum. |
|
| 16.66667 |
1 6.67 |
6.67 |
| 22 |
1 6.67 |
13.33 |
| 26.66667 |
1 6.67 |
20.00 |
| 28 |
1 6.67 |
26.67 |
| 33.33333 |
1 6.67 |
33.33 |
| 38.66667 |
1 6.67 |
40.00 |
| 40 |
1 6.67 |
46.67 |
| 46.66667 |
1 6.67 |
53.33 |
| 55.33333 |
1 6.67 |
60.00 |
| 58 |
1 6.67 |
66.67 |
| 58.66667 |
1 6.67 |
73.33 |
| 63.33333 |
1 6.67 |
80.00 |
| 66.66666 |
1 6.67 |
86.67 |
| 80 |
1 6.67 |
93.33 |
| 92 |
1 6.67 |
100.00 |
|
| Total |
15 100.00 |
| . summ we_3, d |
|
we_3 |
|
|
| Percentiles |
Smallest |
| 1% 16.66667 |
16.66667 |
| 5% 16.66667 |
22 |
| 10% 22 |
26.66667 |
Obs |
15 |
| 25% 28 |
28 |
Sum of Wgt. |
15 |
| 50% 46.66667 |
Mean |
48.4 |
| Largest |
Std. Dev. |
21.85929 |
| 75% 63.33333 |
63.33333 |
| 90% 80 |
66.66666 |
Variance |
477.8286 |
| 95% 92 |
80 |
Skewness |
.3688718 |
| 99% 92 |
92 |
Kurtosis |
2.264325 |
4Àå ½ÃÇè
| 0 |
| 0 |
| 0 |
| 2.777778 |
| 5.555556 |
| 8.333333 |
| 8.333333 |
| 10 |
| 11.11111 |
| 11.11111 |
| 11.11111 |
| 11.11111 |
| 13.88889 |
| 33.33333 |
| 50 |
| 55.55556 |
Æò±Õ 13.7
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