《[经济学]统计学课后答案.doc》由会员分享，可在线阅读，更多相关《[经济学]统计学课后答案.doc（38页珍藏版）》请在三一文库上搜索。
1、hdss73doc:1 :.15 :26 :. 28 :. 38 :. 41 :. 43 31 100 ABC DE. B D A B C D B B A C E A D A B A E A D B C C B C C C C C B C C B C D E B C E C E A C C E D C A E C D D D A A B D D A A B C E E B C E C B E C B C D D C C B D D C A E C D B E A D C B E E B C C B E C B C (1) (2) Excel E D C B A 16 17 32 21 14(3
2、) 40 20 0 E D C B A (4) 1 (%) (%) C B D E A 32 21 17 16 14 32 21 17 16 14 32 53 70 86 10035 30 25 20 15 10 5 0 C D B A E120 100 80 60 40 20 0 (%)32 40 2002 152 105 117 97 124 119 108 88 129 114 105 123 116 115 110 115 100 87 107 119 103 103 137 138 92 118 120 112 95 142 136 146 127 135 117 113 104 1
3、25 108 126 (1) 1K = 1+lg ( 40 ) lg(n) 1.60206 = 1+ = 1+ = 6.32 k=6 lg(2) lg 2 0.301032 ( - ) =152-876=10.83 10 3 80.00 - 89.00 90.00 - 99.00 100.00 - 109.00 110.00 - 119.00 120.00 - 129.00 130.00 - 139.002 3 9 12 7 4% 5.0 7.5 22.5 30.0 17.5 10.02 5 14 26 33 37% 5.0 12.5 35.0 65.0 82.5 92.52140.00 -
4、149.00 150.00+ 2 1 405.0 2.5 100.039 4097.5 100.0(2) 125 115125 105115 105 10 12 9 9 40 % 25.0 30.0 22.5 22.5 100.0 10 22 31 40 % 25.0 55.0 77.5 100.033 40 41 46 35 42 25 36 28 36 29 45 46 37 47 37 34 37 38 37 30 49 34 36 37 39 30 45 44 42 38 43 26 32 43 33 38 36 40 44 44 35 1K = 1+lg ( 40 ) lg(n) 1
5、.60206 = 1+ = 1+ = 6.32 k=6 lg(2) lg 2 0.301032 ( - ) =49-256=4 5 3 <= 25 26 - 30 31 - 35 36 - 40 41 - 45 46+ 1 5 6 14 10 4 40 % 2.5 12.5 15.0 35.0 25.0 10.0 100.0 1 6 12 26 36 40 % 2.5 15.0 30.0 65.0 90.0 100.03 16 14 12 10 8 6 4 2 0<= 25 26 - 30 31 - 35 36 - 40 41 - 45 46+34 57 23 35 18 21 2
6、1 29 47 51 26 46 43 29 23 39 50 41 19 36 28 18 29 52 42 31 28 46 33 28 204605040302010 datadata Stem-and-Leaf Plot Frequency 3.00 5.00 7.00 2.00 3.00 3.00 3.00 3.00 1.00 Stem width: Each leaf: Stem & 1 . 2 . 2 . 3 . 3 . 4 . 4 . 5 . 5 . Leaf 889 01133 6888999 13 569 123 667 012 7 10 1 case(s)36 5
7、0g 50g 100 g 57 46 49 54 55 58 49 61 51 49 51 60 52 54 51 55 60 56 47 47553 51 48 53 50 52 40 45 57 53 52 51 46 48 47 53 47 53 44 47 50 52 53 47 45 48 54 52 48 46 49 52 59 53 50 43 53 46 57 49 49 44 57 52 42 49 43 47 46 48 51 59 45 45 46 52 55 47 49 50 54 47 48 44 57 47 53 58 52 48 55 53 57 49 56 56
8、 57 53 41 48 (1) (2) (3) (1) 1K = 1+lg (100 ) lg(n) 2 = 1+ = 1+ = 6.64 k=6 7 lg(2) lg 2 0.301032 ( - ) =61-406=3.5 3 45 ( - ) =61-407=3 3 3 40.00 - 42.00 43.00 - 45.00 46.00 - 48.00 49.00 - 51.00 52.00 - 54.00 55.00 - 57.00 58.00+ 3 9 24 19 24 14 7 100 3.0 9.0 24.0 19.0 24.0 14.0 7.0 100.0 3 12 36 5
9、5 79 93 100 3.0 12.0 36.0 55.0 79.0 93.0 100.063 3 3020Frequency10Mean =5.22 Std. Dev. =1.508 N =100 0 0 2 4 6 8 103 3 4 <= 40.00 41.00 - 44.00 45.00 - 48.00 49.00 - 52.00 53.00 - 56.00 57.00 - 60.00 61.00+ 1 7 28 28 22 13 1 100 1.0 7.0 28.0 28.0 22.0 13.0 1.0 100.0 1 8 36 64 86 99 100 1.0 8.0 36
10、.0 64.0 86.0 99.0 100.074 4 4030Frequency2010Mean =4.06 Std. Dev. =1.221 N =100 0 0 2 4 6 84 4 5 <= 45.00 46.00 - 50.00 51.00 - 55.00 56.00 - 60.00 61.00+ 12 37 34 16 1 100 12.0 37.0 34.0 16.0 1.0 100.0 12.0 49.0 83.0 99.0 100.0 12.0 49.0 83.0 99.0 100.085 5 5040Frequency302010 Mean =2.57 Std. De
11、v. =0.935 N =100 0 0 1 2 3 4 5 65 5 3.8 1 2 -3 2 -4 -7 -11 -1 7 14 6 -8 -14 -18 -8 -6 -22 -15 -12 -15 -13 -9 -16 -11 -9 -6 -19 -12 -6 -1 -15 -19 0 -1 0 -22 -25 -1 78 5 -25 -24 5 59 -4 -24 -18 -4 -6- 6 -9 -19 -17 -9 -5- 3 2 -4 -4 -16 (1) (2) 1K = 1+lg ( 60 ) lg(n) 1.778151 = 1+ = 1+ = 6.90989 k=7 lg(
12、2) lg 2 0.301032 ( - ) =14-25)7=5.57 593 -25 - -21 -20 - -16 -15 - -11 -10 - -6 -5 - -1 0-4 5-9 10+ 6 8 9 12 12 4 8 1 60 % 10.0 13.3 15.0 20.0 20.0 6.7 13.3 1.7 100.0 6 14 23 35 47 51 59 60 % 10.0 23.3 38.3 58.3 78.3 85.0 98.3 100.0(3) 14 12 10 8 6 4 2 0- 25 - -21 -20 - -16 -15 - -11 -10 - -6 -5 - -
13、1 0 - 4 5 - 9 10+12 9128 68 4 13.11 x y 2 25 3 25 4 20 1 30 8 16 7 181035 30 25 y 20 15 10 5 0 0 2 4 x 6 8 103 1240 3 6 18 9 4 6 15 9 8 2 (1) 20 18 16 14 12 10 8 6 4 2 018 15 4 29 6 3 698112 8 9 4 36 6 91815(2) (3) 20 15 10 5 0 3.14 1995 2004 ( ) 121995 1996 1997 1998 1999 2000 2001 2002 2003 200458
14、478.1 678846 744626 783452 820675 894681 973148 105172.3 1173902 136875911993 13844.2 142112 145524 1447196 146282 154118 161173 169281 207680728538 33613 37223 38619 40558 44935 48750 52980 61274 7238717947 20428 23029 25174 27038 29905 33153 36075 39188 43721 (1)Excel 160000 140000 120000 100000 8
15、0000 60000 40000 20000 0 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004(2)80000 70000 60000 50000 40000 30000 20000 10000 0 (3)200419 95 19 96 19 97 19 98 19 99 20 00 20 01 20 02 20 03 20 041320768.07, 15% 43721, 32% 72387, 53%14 41 10 5 () 2 4 7 10 10 10 12 12 14 15 1 (2) (3) (4) Statistics N Va
16、lid Missing Mean Median Mode Std. Deviation Percentiles 25 50 75 10 0 9.60 10.00 10 4.169 6.25 10.00 12.5015Histogram32Frequency1Mean =9.6 Std. Dev. =4.169 N =10 0 2.5 5 7.5 10 12.5 1542 25 19 23 30 23 41 15 21 20 27 20 29 38 19 22 31 25 22 19 34 17 24 18 16 24 23 (1) 1 Frequency 15 16 17 Valid 18 1
17、9 20 21 1 1 1 1 3 2 1 Percent 4.0 4.0 4.0 4.0 12.0 8.0 4.0 Cumulative Frequency 1 2 3 4 7 9 10 Cumulative Percent 4.0 8.0 12.0 16.0 28.0 36.0 40.01622 23 24 25 27 29 30 31 34 38 41 Total2 3 2 1 1 1 1 1 1 1 1 258.0 12.0 8.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 100.012 15 17 18 19 20 21 22 23 24 2548.0 60.
18、0 68.0 72.0 76.0 80.0 84.0 88.0 92.0 96.0 100.0 Mo 1923 Me=23 (2) Q1 =25/4=6.25 Q1=19Q3 =325/4=18.75 Q3=27 25 27 Q3 25+0.752=26.5 (3) Mean=24.00Std. Deviation=6.652 (4) Skewness=1.080Kurtosis=0.773 (5) =24=6.652 32Count1. 0 15 16 17 18 19 20 21 22 23 24 25 27 29 30 31 34 38 41173.02. 5Count3. 01. 51
19、.0 15 16 17 18 19 20 21 22 23 24 25 27 29 30 31 34 38 41 1K = 1+lg ( 25 ) lg(n) 1.398 = 1+ = 1+ = 5.64 k=6 lg(2) lg 2 0.301032( - ) =41-156=4.3 5 3 (Binned)Frequency <= 15 16 - 20 21 - 25 26 - 30 Valid 31 - 35 36 - 40 41+ Total 2 1 1 25 8.0 4.0 4.0 100.0 23 24 25 92.0 96.0 100.0 1 8 9 3 Percent 4
20、.0 32.0 36.0 12.0 Cumulative Frequency 1 9 18 21 Cumulative Percent 4.0 36.0 72.0 84.0Mean Std. Deviation Variance Skewness 23.3000 7.02377 49.333 1.163 18Kurtosis1. 302108Frequency642. Mean =23.30 Std. Dev. =7.024 N =25 0 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 50.0043 3 9 72 197 () 55 66 6
21、7 68 71 73 74 78 78 (1)() Stem-and-Leaf Plot Frequency 3.00 3.00 2.00 Stem width: Each leaf: Stem & 6 . 7 . 7 . 1.00 1 case(s) Leaf (=<5.5) 678 134 88 1.00 Extremes(2) Mean Std. Deviation Variance 7 0.714143 0.5119(3) (4) 44 6 257 271 272 276 292 284 297 261 268 252 281 303 238 301 273 310 27
22、4 263 240 267 322 236 280 249 265 291 269 278 258 295 (1) (2) (3) Statistics N Valid Missing Mean Median Std. Deviation Percentiles 25 50 75 30 0 274.1000 272.5000 21.17472 260.2500 272.5000 291.250045 A B C () 15 20 30 () 2100 3000 1500 19.41176471 140 150 50 2 100 3 000 1 500 () 3255 1500 1500 18.
23、28947368 217 75 50 () 3 255 1 500 1 500 A B C () 15 20 30 19.41 18.29 2046 120 () 200300 300400 400500 500600 600 (1) 120 (2) Statistics Mi N Valid Missing Mean Std. Deviation Skewness Std. Error of Skewness Kurtosis Std. Error of Kurtosis 120 0 426.6667 116.48445 0.208 0.221 -0.625 0.438() 19 30 42 18 11 12021Histogram5040Frequency302010 Mean =426.67 Std. Dev. =116.484 N =120 200.00 300.00 400.00 500.00 600.00 700.000Mi Mi MiCases weighted by 47