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2张ppt帮你区分直条图和直方图,还有口诀帮你记

  • 2026-06-06 20:57:07
2张ppt帮你区分直条图和直方图,还有口诀帮你记
这两天又有伙伴给我留言说还是分不清什么是直条图什么是直方图。我们先从概念上看一下：
直条图:用等宽直条的长短表示相互独立的各指标值的大小。
直方图：以等宽矩形的面积表示频数的多少，用于表示连续变量的频数分布，常在频数表的基础上绘制直方图。
直条图记住口诀：独立条约
直方图记住口诀：分方
有了这两个口诀基本上题目是会做了。再给你附上两张我上课时候的ppt，可以看看图形本身长得也不一样。
所以，统计学没有大家想象中那么难，好好学习肯定可以学明白的。还有哪里不会的可以评论区给我留言，我来给你梳理明白！
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  1. CONNECT:[ UseTime:0.001001s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001761s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003204s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000740s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001673s ]
  6. SELECT * FROM `set` [ RunTime:0.000611s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001793s ]
  8. SELECT * FROM `article` WHERE `id` = 516168 LIMIT 1 [ RunTime:0.005431s ]
  9. UPDATE `article` SET `lasttime` = 1780956559 WHERE `id` = 516168 [ RunTime:0.017514s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000912s ]
  11. SELECT * FROM `article` WHERE `id` < 516168 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001481s ]
  12. SELECT * FROM `article` WHERE `id` > 516168 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001246s ]
  13. SELECT * FROM `article` WHERE `id` < 516168 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001328s ]
  14. SELECT * FROM `article` WHERE `id` < 516168 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000720s ]
  15. SELECT * FROM `article` WHERE `id` < 516168 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004833s ]
0.196865s