ijУ¼×£¬ÒÒÁ½ÃûÌøÔ¶Ô˶¯Ô±²Î¼Ó¼¯ÑµÊ±×î½ü10´ÎµÄ±ÈÈü³É¼¨ÈçÏ£º£¨µ¥Î»£ºm£©
¼×£º5.85¡¡5.93¡¡6.07¡¡5.91¡¡5.99¡¡6.13¡¡5.98¡¡6.05¡¡6.00¡¡6.19
ÒÒ£º6.11¡¡6.08¡¡5.83¡¡5.92¡¡5.84¡¡5.81¡¡6.18¡¡6.17¡¡5.85¡¡6.21
£¨1£©ËûÃǵÄƽ¾ù³É¼¨·Ö±ðÊǶàÉÙ£¿
£¨2£©¼×£¬ÒÒµÄ10´Î±ÈÈüµÄ·½²î·Ö±ðÊǶàÉÙ£¿
£¨3£©ÕâÁ½ÃûÔ˶¯Ô±µÄ³É¼¨¸÷ÓÐʲôÌص㣿
£¨4£©Èç¹ûÒª´ÓÖÐÑ¡³öÒ»È˲μÓÊ춱ÈÈü£¬Àú½ì±ÈÈü±íÃ÷£¬³É¼¨´ïµ½5.92m¾ÍÄܶá¹Ú£¬ÄãÈÏΪӦѡ˭²Î¼Ó±ÈÈü£¿Èç¹ûÀú½ì±ÈÈü³É¼¨±íÃ÷£¬³É¼¨´ïµ½6.08m¾ÍÄÜ´òÆƼǼ£¬ÄãÈÏΪÓÖÓ¦¸ÃÑ¡Ë­²Î¼ÓÕâ´Î±ÈÈüÄØ£¿

½â£º£¨1£©¼×=¡Á£¨5.85+5.93+¡­+6.19£©=6.01£¬ÒÒ=¡Á£¨6.11+6.08+¡­+6.21£©=6£¨m£©£®

£¨2£©s¼×2=¡Á[£¨6.01-5.85£©2+£¨6.01-5.93£©2+¡­+£¨6.01-6.19£©2]=0.00954£¨Æ½·½Ã×£©£®
sÒÒ2=¡Á[£¨6-6.11£©2+£¨6-6.08£©2+¡­+£¨6-6.21£©2]=0.02434£¨Æ½·½Ã×£©£®

£¨3£©¼×µÄ³É¼¨½ÏÎȶ¨£¬µ«ÒÒÓм¸´ÎµÄ³É¼¨ÌرðºÃ£¬Èç¹û·¢»ÓµÃºÃ£¬Òҵijɼ¨±È¼×ºÃ£®

£¨4£©ÒòΪs¼×2£¼sÒÒ2£¬¼´¼×³É¼¨½ÏÎȶ¨£¬Èç¹û³É¼¨´ïµ½5.92m¾ÍÄܶá¹Ú£¬Ó¦Ñ¡¼×²ÎÈü£®µ«ÒÒ´ïµ½6.08mµÄ¿ÉÄÜÐԽϴó£¬Èç¹û³É¼¨´ïµ½6.08mÄÜ´òÆƼͼ£¬Ó¦Ñ¡ÒÒ²ÎÈü£®
·ÖÎö£º¸ù¾Ýƽ¾ùÊýºÍ·½²îµÄ¸ÅÄî·Ö±ðÇóµÃ¼×ÒÒÁ½È˵Äƽ¾ùÊýºÍ·½²î£®È»ºóÔÙ·ÖÎö£®
µãÆÀ£ºÒ»°ãµØÉèn¸öÊý¾Ý£¬x1£¬x2£¬¡­xn£¬Æ½¾ùÊý=£¨x1+x2+x3¡­+xn£©£¬·½²îS2=[£¨x1-£©2+£¨x2-£©2+¡­+£¨xn-£©2]£¬Ëü·´Ó³ÁËÒ»×éÊý¾ÝµÄ²¨¶¯´óС£¬·½²îÔ½´ó£¬²¨¶¯ÐÔÔ½´ó£¬·½²îԽС£¬²¨¶¯ÐÔԽС£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

1¡¢Ä³Ð£Òª´Ó¼×¡¢ÒÒÁ½ÃûÌøÔ¶Ô˶¯Ô±ÖÐÌôÑ¡Ò»È˲μÓÒ»ÏîУ¼Ê±ÈÈü£®ÔÚ×î½üµÄ10´ÎÑ¡°ÎÈüÖУ¬ÕâÁ½¸öÈ˵ÄÌøÔ¶³É¼¨£¨µ¥Î»£ºcm£©ÈçͼËùʾ£º¸ù¾ÝͼÖÐÐÅÏ¢£¬½â´ðÏÂÁÐÎÊÌ⣺

£¨1£©·Ö±ðÇó¼×¡¢ÒÒÁ½ÃûÔ˶¯Ô±³É¼¨µÄ¼«²î£»
£¨2£©Çó¼×Ô˶¯Ô±³É¼¨µÄÖÐλÊý¡¢ÖÚÊý£»
£¨3£©ÕâÁ½ÃûÔ˶¯Ô±µÄ³É¼¨¸÷ÓÐʲôÌص㣿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

21¡¢Ä³Ð£Òª´Ó¼×¡¢ÒÒÁ½ÃûÌøÔ¶Ô˶¯Ô±ÖÐÌôÑ¡Ò»È˲μÓÒ»ÏîУ¼Ê±ÈÈü£®ÔÚ×î½üµÄ10´ÎÑ¡°ÎÈüÖУ¬ËûÃǵijɼ¨£¨µ¥Î»£ºCM£©ÈçÏÂ
1 2 3 4 5 6 7 8 9 10 ƽ¾ù·Ö ±ê×¼²î
¼× 585 596 610 598 612 597 604 600 613 601 601.6
ÒÒ 613 618 580 574 618 593 585 590 598 624 16.86
£¨1£©ÇëÄãÌîдÉϱíÖÐÏà¹ØµÄͳ¼ÆÁ¿£»
£¨2£©ÕâÁ½ÃûÔ˶¯Ô±µÄÔ˶¯³É¼¨¸÷ÓÐʲôÌص㣿Àú½ì±ÈÈü±íÃ÷£¬³É¼¨´ïµ½5.96m¾ÍºÜ¿ÉÄܶá¹Ú£¬³É¼¨´ïµ½6.10m¾ÍÄÜ´òÆƼǼ£¬ÄãÈÏΪӦ¸ÃÑ¡Ë­²Î¼ÓÕâÏî±ÈÈü£¬ÇëÄã·¢±í×Ô¼ºµÄ¼û½â£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ijУ¼×£¬ÒÒÁ½ÃûÌøÔ¶Ô˶¯Ô±²Î¼Ó¼¯ÑµÊ±×î½ü10´ÎµÄ±ÈÈü³É¼¨ÈçÏ£º£¨µ¥Î»£ºm£©
¼×£º5.85  5.93  6.07  5.91  5.99  6.13  5.98  6.05  6.00  6.19
ÒÒ£º6.11  6.08  5.83  5.92  5.84  5.81  6.18  6.17  5.85  6.21
£¨1£©ËûÃǵÄƽ¾ù³É¼¨·Ö±ðÊǶàÉÙ£¿
£¨2£©¼×£¬ÒÒµÄ10´Î±ÈÈüµÄ·½²î·Ö±ðÊǶàÉÙ£¿
£¨3£©ÕâÁ½ÃûÔ˶¯Ô±µÄ³É¼¨¸÷ÓÐʲôÌص㣿
£¨4£©Èç¹ûÒª´ÓÖÐÑ¡³öÒ»È˲μÓÊ춱ÈÈü£¬Àú½ì±ÈÈü±íÃ÷£¬³É¼¨´ïµ½5.92m¾ÍÄܶá¹Ú£¬ÄãÈÏΪӦѡ˭²Î¼Ó±ÈÈü£¿Èç¹ûÀú½ì±ÈÈü³É¼¨±íÃ÷£¬³É¼¨´ïµ½6.08m¾ÍÄÜ´òÆƼǼ£¬ÄãÈÏΪÓÖÓ¦¸ÃÑ¡Ë­²Î¼ÓÕâ´Î±ÈÈüÄØ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º²»Ïê ÌâÐÍ£º½â´ðÌâ

ijУ¼×£¬ÒÒÁ½ÃûÌøÔ¶Ô˶¯Ô±²Î¼Ó¼¯ÑµÊ±×î½ü10´ÎµÄ±ÈÈü³É¼¨ÈçÏ£º£¨µ¥Î»£ºm£©
¼×£º5.85  5.93  6.07  5.91  5.99  6.13  5.98  6.05  6.00  6.19
ÒÒ£º6.11  6.08  5.83  5.92  5.84  5.81  6.18  6.17  5.85  6.21
£¨1£©ËûÃǵÄƽ¾ù³É¼¨·Ö±ðÊǶàÉÙ£¿
£¨2£©¼×£¬ÒÒµÄ10´Î±ÈÈüµÄ·½²î·Ö±ðÊǶàÉÙ£¿
£¨3£©ÕâÁ½ÃûÔ˶¯Ô±µÄ³É¼¨¸÷ÓÐʲôÌص㣿
£¨4£©Èç¹ûÒª´ÓÖÐÑ¡³öÒ»È˲μÓÊ춱ÈÈü£¬Àú½ì±ÈÈü±íÃ÷£¬³É¼¨´ïµ½5.92m¾ÍÄܶá¹Ú£¬ÄãÈÏΪӦѡ˭²Î¼Ó±ÈÈü£¿Èç¹ûÀú½ì±ÈÈü³É¼¨±íÃ÷£¬³É¼¨´ïµ½6.08m¾ÍÄÜ´òÆƼǼ£¬ÄãÈÏΪÓÖÓ¦¸ÃÑ¡Ë­²Î¼ÓÕâ´Î±ÈÈüÄØ£¿

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸