山東大學實訓 Day9

修改了幾個bug，做了一下數據分析

後50位：

	borrow	access	total_cost	meal_cost	1st	2nd
count	50.000000	50.000000	50.000000	50.000000	50.000000	50.000000
mean	2.620000	12.580000	1121.768400	153.700000	442.560000	326.480000
std	5.938082	21.859561	970.946793	139.180583	108.393117	173.442485
min	0.000000	0.000000	0.000000	0.000000	89.000000	5.000000
25%	0.000000	0.000000	0.000000	0.000000	418.500000	204.250000
50%	0.000000	4.000000	1391.005000	167.000000	486.500000	350.500000
75%	2.000000	12.000000	1921.780000	273.750000	516.500000	496.250000
max	30.000000	102.000000	2902.820000	411.000000	538.000000	537.000000

 

前50位：

	borrow	access	total_cost	meal_cost	1st	2nd
count	50.000000	50.000000	50.000000	50.00000	50.00000	50.000000
mean	13.880000	65.040000	1637.128600	322.24000	48.42000	224.000000
std	18.192441	52.346163	938.026951	170.34845	46.88026	160.738982
min	0.000000	2.000000	0.000000	0.00000	1.00000	3.000000
25%	3.000000	28.000000	994.787500	197.25000	16.25000	80.500000
50%	8.000000	53.500000	1688.385000	351.50000	34.50000	209.500000
75%	17.750000	84.250000	2259.177500	446.25000	66.50000	352.750000
max	93.000000	234.000000	4180.030000	633.00000	240.00000	518.000000

整體：

	borrow	access	total_cost	meal_cost	1st	2nd	rank
count	538.000000	538.000000	538.000000	538.000000	538.000000	538.000000	538.000000
mean	6.962825	38.985130	1294.465613	228.224907	269.500000	269.500000	269.500000
std	11.559196	41.331378	992.879998	174.945013	155.451493	155.451493	155.451493
min	0.000000	0.000000	0.000000	0.000000	1.000000	1.000000	1.000000
25%	0.000000	6.000000	122.605000	23.250000	135.250000	135.250000	135.250000
50%	3.000000	24.000000	1498.330000	264.500000	269.500000	269.500000	269.500000
75%	9.000000	59.000000	2062.820000	365.750000	403.750000	403.750000	403.750000
max	93.000000	266.000000	5516.370000	815.000000	538.000000	538.000000	538.000000