1 00:00:00,740 --> 00:00:02,990 一个统计学家,统计了 2 00:00:02,990 --> 00:00:04,800 一个篮球队中,所有 12 个队员 3 00:00:04,800 --> 00:00:07,600 在一场比赛中所得的分数 4 00:00:07,600 --> 00:00:12,010 然后做了一个茎叶图来展示这些数据 5 00:00:12,010 --> 00:00:14,040 有时候它也叫茎状图 6 00:00:14,040 --> 00:00:16,102 篮球队得了多少分? 7 00:00:16,102 --> 00:00:18,310 当你第一次看到这张图 8 00:00:18,310 --> 00:00:19,950 可能有点难懂 9 00:00:19,950 --> 00:00:22,444 在”叶子“下,我们有 0,1,2 10 00:00:22,444 --> 00:00:23,860 在这里你可以看到所有的这些 11 00:00:23,860 --> 00:00:26,190 那这个图和每个运动员所得的分 12 00:00:26,190 --> 00:00:29,260 有什么联系呢? 13 00:00:29,260 --> 00:00:31,750 解释茎叶图的方式 14 00:00:31,750 --> 00:00:33,910 是,它的叶子包含了, 15 00:00:33,910 --> 00:00:38,470 这个统计学家所做的这张图中,叶子代表了最小的数字,或 16 00:00:38,470 --> 00:00:41,400 每个运动员所得的分 17 00:00:41,400 --> 00:00:42,860 的个位数 18 00:00:42,860 --> 00:00:45,250 而茎,代表了十位数 19 00:00:45,250 --> 00:00:48,870 通常叶子会代表每个数值最右边的位数 20 00:00:48,870 --> 00:00:50,700 也就是个位数,而茎 21 00:00:50,700 --> 00:00:52,840 会包含其它位数 22 00:00:52,840 --> 00:00:54,480 所以这个表的用处是,它给了一个 23 00:00:54,480 --> 00:00:57,070 每个运动员位置的分布图 24 00:00:57,070 --> 00:00:59,310 你可以看到,大多数运动员 25 00:00:59,310 --> 00:01:01,440 得的分数的十位数是 0 26 00:01:01,440 --> 00:01:04,209 一些运动员的分数十位数是 1 27 00:01:04,209 --> 00:01:07,980 只有一个运动员的分数的十位数是 2 28 00:01:07,980 --> 00:01:09,450 他其实得了 20 分 29 00:01:09,450 --> 00:01:11,977 30 00:01:11,977 --> 00:01:13,810 31 00:01:13,810 --> 00:01:15,420 32 00:01:15,420 --> 00:01:18,920 33 00:01:18,920 --> 00:01:23,020 34 00:01:23,020 --> 00:01:25,070 35 00:01:25,070 --> 00:01:28,462 36 00:01:31,330 --> 00:01:33,040 37 00:01:33,040 --> 00:01:37,090 38 00:01:37,090 --> 00:01:39,800 39 00:01:39,800 --> 00:01:43,600 40 00:01:43,600 --> 00:01:46,220 41 00:01:46,220 --> 00:01:48,710 42 00:01:48,710 --> 00:01:51,793 43 00:01:51,793 --> 00:01:54,330 44 00:01:54,330 --> 00:01:58,580 45 00:01:58,580 --> 00:02:02,480 46 00:02:02,480 --> 00:02:05,960 47 00:02:05,960 --> 00:02:08,530 48 00:02:08,530 --> 00:02:11,460 49 00:02:11,460 --> 00:02:14,850 50 00:02:14,850 --> 00:02:16,870 51 00:02:16,870 --> 00:02:18,407 52 00:02:18,407 --> 00:02:19,990 53 00:02:19,990 --> 00:02:21,615 54 00:02:21,615 --> 00:02:24,700 55 00:02:24,700 --> 00:02:27,940 56 00:02:27,940 --> 00:02:31,700 57 00:02:31,700 --> 00:02:34,060 58 00:02:34,060 --> 00:02:37,760 59 00:02:37,760 --> 00:02:40,940 60 00:02:40,940 --> 00:02:44,710 61 00:02:44,710 --> 00:02:46,600 62 00:02:46,600 --> 00:02:51,250 63 00:02:51,250 --> 00:02:54,090 64 00:02:54,090 --> 00:02:57,150 65 00:02:57,150 --> 00:02:59,370 66 00:02:59,370 --> 00:03:02,770 67 00:03:02,770 --> 00:03:06,080 68 00:03:06,080 --> 00:03:08,350 69 00:03:08,350 --> 00:03:10,250 70 00:03:10,250 --> 00:03:14,070 71 00:03:14,070 --> 00:03:15,770 72 00:03:15,770 --> 00:03:18,020 73 00:03:18,020 --> 00:03:20,760 74 00:03:20,760 --> 00:03:23,160 75 00:03:23,160 --> 00:03:25,710 76 00:03:25,710 --> 00:03:27,190 77 00:03:27,190 --> 00:03:29,390 78 00:03:29,390 --> 00:03:33,220 79 00:03:33,220 --> 00:03:37,296 80 00:03:37,296 --> 00:03:38,420 81 00:03:38,420 --> 00:03:40,160 82 00:03:40,160 --> 00:03:43,030 83 00:03:43,030 --> 00:03:45,370 84 00:03:45,370 --> 00:03:48,179 85 00:03:48,179 --> 00:03:49,470 86 00:03:49,470 --> 00:03:51,261 87 00:03:51,261 --> 00:03:54,110 88 00:03:54,110 --> 00:03:55,700 89 00:03:55,700 --> 00:03:58,210 90 00:03:58,210 --> 00:04:00,450 91 00:04:00,450 --> 00:04:02,620 92 00:04:02,620 --> 00:04:04,360 93 00:04:04,360 --> 00:04:06,360 94 00:04:06,360 --> 00:04:09,190 95 00:04:09,190 --> 00:04:10,920 96 00:04:10,920 --> 00:04:12,530 97 00:04:12,530 --> 00:04:16,230 98 00:04:16,230 --> 00:04:27,120 99 00:04:27,120 --> 00:04:33,177 100 00:04:33,177 --> 00:04:34,010 101 00:04:34,010 --> 00:04:38,570 102 00:04:38,570 --> 00:04:40,770 103 00:04:40,770 --> 00:04:42,353 104 00:04:46,440 --> 00:04:53,110 105 00:04:53,110 --> 00:05:03,490 106 00:05:03,490 --> 00:05:05,060 107 00:05:05,060 --> 00:05:06,590 108 00:05:06,590 --> 00:05:22,232 109 00:05:22,232 --> 00:05:23,940 110 00:05:23,940 --> 00:05:25,148 111 00:05:25,148 --> 00:05:27,030 112 00:05:27,030 --> 00:05:28,404 113 00:05:28,404 --> 00:05:30,280 114 00:05:30,280 --> 00:05:40,660 115 00:05:40,660 --> 00:05:42,660 116 00:05:42,660 --> 00:05:44,720 117 00:05:44,720 --> 00:05:49,490 118 00:05:49,490 --> 00:05:52,200 119 00:05:52,200 --> 00:05:57,540