¸ß¼¶Ê³Æ·¼ìÑ鹤¸´Ï°Ìâ ÏÂÔر¾ÎÄ

¸ß¼¶Ê³Æ·¼ìÑ鹤¸´Ï°Ìâ ÁÙʱ¹ÊÕÏ£¬ÌìƽÁ½²àζȲ»Ò»£¬µçѹ²»Îȶ¨£¬È¡Ñù²»¾ùÔȵȣ¬ÁíÍ⣬²Ù×÷Õß²»Ð¡ÐÄÒ²ÊDzúÉúżȻÎó²îµÄÔ­Òò£¬ÈçÎüÁ¿ÑªÒººó¹ÜÍâ²ÁµÄ²»¾»£¬»ò·Å³öµÄËٶȲ»¾ùÔȵȣ¬Å¼È»Îó²îµÄ´óСͨ³£Óþ«ÃܶÈÀ´ºâÁ¿¡£

2£º¾«ÃÜ¶È ¾«ÃܶÈÊÇÖ¸¶ÔͬһÑùÆ·ÔÚͬһÌõ¼þ϶à´Î²â¶¨½á¹ûÖ®¼ä½Ó½üµÄ³Ì¶È¡£Í¬Ò»ÑùÆ·µÄһϵÁвâÖµÔ½Êǽӽü£¬¾«ÃܶÈÔ½¸ß£¬±íÃ÷żȻÎó²îԽС¡£Èô²â¶¨¸ßµÍ²»Ò»£¬±íÃ÷żȻÎó²îºÜ´ó£¬¾«ÃܶȺܵ͡£

¾«ÃܶÈÒ»°ãÓÃÆ«²îÀ´±íʾ¡£Æ«²îÒ²·ÖΪ¾ø¶ÔÆ«²îºÍÏà¶ÔÆ«²î£º ¾ø¶ÔÆ«²î= ¸ö±ð²â¶¨Öµ-²â¶¨ÖµµÄËãÊõƽ¾ùÖµ£¨²»¼ÆÕý¸ººÅ£© Ïà¶ÔÆ«²î£¨%£©= ¾ø¶ÔÆ«²î ËãÊõƽ¾ùÖµ ¡Á100

¾«Ãܶȵıíʾ·½·¨ºÍÎó²îµÄ±íʾ·½·¨Ò»Ñù£¬ÓÃÏà¶ÔÆ«²î±íʾ±È¾ø¶ÔÆ«²î¸üÓÐÒâÒå¡£

ÔÚʵÑéÖУ¬¶ÔijһÑùƷͨ³£Ðë½øÐжà´ÎƽÐвⶨ£¬ÇóµÃÆäËãÊõƽ¾ùÖµ£¬×÷Ϊ¸ÃÑùÆ·µÄ·ÖÎö½á¹û¡£¶ÔÓڸýá¹ûµÄ¾«ÃܶÈÔòÓжàÖÖ±íʾ·½·¨¡£

¢Åƽ¾ù¾ø¶ÔÆ«²îºÍƽ¾ùÏà¶ÔÆ«²îµÄ±íʾ·¨£º Èç Ò»·ÝѪÑù¹²×÷4´ÎѪÂȲⶨ£¬Æä½á¹ûÈçÏ£º

²â¶¨½á¹û£¨t£© ËãÊõƽ¾ùÖµ ¸ö±ð²âÖµµÄ¾ø¶ÔÆ«²î£¨d£© 566mg% 9mg% 584mg% 575mg% 9mg% 570mg% 5mg% 580mg% 5mg% ¥þ ƽ¾ù¾ø¶ÔÆ«²î£¨d£©= 9+9+5+5 4 =7mg% ƽ¾ùÏà¶ÔÆ«²î= 7 575 =1.2%

ÔÚʵÑéÖУ¬ÓÐʱֻ×öÁ½´Î²â¶¨£¬¾«È·¶È¿ÉÓÃÏÂʽ¼ÆË㣺 Á½´Î·ÖÎö½á¹ûµÄ²îÖµ ƽ¾ùÖµ ¡Á100%

²»Í¬µÄʵÑé·½·¨£¬ÔÊÐíÎó²îµÄÒªÇó²»Ïàͬ¡£ÈçÓõζ¨·¨¶ÔͬһÑùÆ·½øÐÐƽÐвⶨʱ£¬Æä¸÷²âÖµÖ®¼äµÄÔÊÐíÎó²î²»Ó¦³¬¹ý0.2%¡£

¢Æ±ê׼ƫ²î»ò¾ù·½¸ùÆ«²î£ºÀûÓþø¶ÔÆ«²î£¨d£©ºÍ²â¶¨´ÎÊý£¨n£©¿É¼ÆËã³ö±ê׼ƫ²î£¨S.D£©£º S.D=¡À¡Ì¦²d2 n-1

±ê׼ƫ²î±íʾËù²â¶¨µÄÕâЩÑùÆ·Öдý²âÎïµÄº¬Á¿±ä»¯·¶Î§¡£ÕâÊÇ´ÓÉúÎïͳ¼ÆÍƵ¼À´µÄÒ»ÖÖ¾«Ãܶȱíʾ·¨£¬±ê׼ƫ²îԽС±íʾÑùÆ·Öи÷¸ö²âÖµµÄ±äÒì¶È£¨¼¯Öлò·ÖÉ¢µÄ³Ì¶È£©Ô½Ð¡¡£±íʾԽ¾«È·¡£Æä½á¹û¿ÉÒÔÓÃƽ¾ùÖµ£¨x£©

µÚ 41 Ò³ ¹² 42 Ò³

¸ß¼¶Ê³Æ·¼ìÑ鹤¸´Ï°Ìâ

¡À±ê׼ƫ²î£¨S.D£©À´±íʾ¡£

3£ºÅ¼È»Îó²îµÄ¼õÃ⼰УÕý żȻÎó²îÓë·ÖÎö½á¹ûµÄ¾«ÃܶÈÓйأ¬ËüÀ´Ô´ÓÚÄÑÒÔÔ¤ÁϺͲ»¹Ì¶¨µÄÒòËØ¡£»òÊÇÓÉÓÚÈ¡Ñù²»¾ùÔÈ£¬»òÊÇÓÉÓڲⶨ¹ý³ÌÖÐijЩ²»Ò׿ØÖƵÄÍâ½çÒòËصÄÓ°ÏìµÈ¡£ÔÚÉúÎï²â¶¨·¨ÖУ¬ÓÉÓÚÓ°ÏìÉúÎïµÄÒòËØÊǶ෽ÃæµÄ£¬ÍùÍù»¹»áÔì³É½Ï´óµÄÎó²î¡£ÎªÁ˼õÉÙżȻÎó²î£¬Ò»°ã²ÉÈ¡µÄ´ëÊ©ÊÇ£º

¢Å¾ùÔÈÈ¡Ñù ¶¯¡¢Ö²ÎïÐÂÏÊ×éÖ¯¿ÉÖƳÉÔȽ¬ºóÈ¡Ñù£»Ï¸¾úͨ³£ÖƳÉÐüÒº£¬¾­²£Á§Çò´òÉ¢Ò¡ÔȺó£¬ÔÙÁ¿È¡Ò»¶¨Ìå»ýµÄ¾úÌåÑùÆ·½øÐзÖÎö£»¹ÌÌåÑùÆ·¼«²»¾ùÔÈ£¬Ó¦ÓÚÈ¡ÑùÇ°ÏȽøÐзÛËé¡¢»ìÔÈ¡£

¢Æ¶à´ÎÈ¡Ñù ¸ù¾ÝżȻÎó²î³öÏֵĹæÂÉ£¬Èç¹û½øÐжà´ÎƽÐвⶨ£¬È»ºóÈ¡ÆäËãÊõƽ¾ùÖµ£¬¾Í¿ÉÒÔ¼õÉÙżȻÎó²î¡£Æ½ÐвⶨµÄ´ÎÊýÓú¶à£¬Æäƽ¾ùżȻÎó²î¾ÍÓúÉÙ¡£

¹ØÓÚÉÏÊöµÄϵͳÎó²î£¬Å¼È»Îó²î¼°×¼È·¶ÈºÍ¾«ÃܶȵÄÎÊÌ⣬Óм¸¸öÎÊÌâÔÙ½øÒ»²½ËµÃ÷¡£

1£º³ýϵͳÎó²î¡¢Å¼È»Îó²îÖ®Í⣬»¹ÓÐÒò´íÎó²Ù×÷ÒýÆðµÄ¡°¹ýʧÎó²î¡±£¬Èç¶Á´í¿Ì¶È¡¢ÈÜÒº½¦³ö£¬¼Ó´íÊÔ¼ÁµÈ¡£Õâʱ¿ÉÄܳöÏÖÒ»¸öºÜ´óµÄÎó²îÖµ£¬´ËÖÖÊýÖµÓ¦ÆúÈ¥²»Óá£

2£ºÎó²îÓëÆ«²î¾ßÓв»Í¬µÄº¬Ò壬Îó²îÒÔÕæʵֵΪ±ê×¼£¬¶øÆ«²îÊÇÒÔƽ¾ùֵΪ±ê×¼¡£ÓÉÓÚÎïÖʵÄÕæʵֵһ°ãÊÇÎÞ·¨ÖªµÀµÄ£¬ËùÒÔÎÒÃÇƽʱËù˵µÄÕæʵֵʵ¼ÊÉÏÖ»ÊDzÉÓÃÁ˸÷ÖÖ·½·¨½øÐжà´ÎƽÐзÖÎöËùµÃµ½µÄÏà¶ÔÕýÈ·µÄƽ¾ùÖµ¡£ÓÃÕâһƽ¾ùÖµ´úÌæÕæʵֵÀ´¼ÆËãÎó²î£¬µÃµ½½á¹ûÈÔȻֻÊÇÆ«²î¡£

3£ºÓþ«ÃܶÈÀ´ÆÀ¼Û·ÖÎöµÄ½á¹ûÒ²ÓÐÒ»¶¨¾ÖÏÞÐÔ¡£Èç·ÖÎö½á¹ûµÄ¾«ÃܶȺܸߣ¨¼´Æ½¾ùÏà¶ÔÆ«²îºÜС£©£¬²¢²»Ò»¶¨ËµÃ÷ʵÑéµÄ׼ȷ¶ÈÒ²ºÜ¸ß¡£ÒòΪÈç¹û·ÖÎö¹ý³ÌÖдæÔÚÓÐϵͳÎó²î£¬¿ÉÄܲ¢²»Ó°Ïìÿ´Î²â¶¨ÊýÖµÖ®¼äµÄÖغϳ̶ȣ¬¼´²»Ó°Ï쾫Ãܶȡ£µ«´Ë·ÖÎö½á¹ûÈ´±ØȻƫÀëÕæʵֵ½Ï´ó£¬Ò²¾ÍÊÇ·ÖÎöµÄ׼ȷ¶È²¢²»Ò»¶¨ºÜ¸ß¡£µ±È»ÈôÊǾ«ÃܶÈÒ²²»¸ß£¬ÔòÎÞ׼ȷ¶È¿ÉÑÔ¡£

4£ºÔÚʵ¼ÊµÄ·ÖÎö¹¤×÷ÖУ¬Ó¦¸ù¾ÝÐèÒªµÄ׼ȷ¶ÈÑ¡Ôñ²âÁ¿ÊֶΣ¨ÒÇÆ÷¼°·½·¨£©¡£Èç·ÖÎöÑùƷʱ£¬ÒªÇó׼ȷ¶Èµ½0.1g£¬Ö»ÐèʹÓĄ̃³Ó£¬²»±ØʹÓ÷ÖÎöÌìƽ¡£Èç¹ûÐèÒª½Ï¸ßµÄ׼ȷ¶È£¬ÓÖÎÞÊÊÒ˵ÄÒÇÆ÷É豸£¬Ôò¿ÉÓÃÌá¸ßÑùÆ·ÓÃÁ¿µÄ·½·¨À´´ïµ½¡£

µÚ 42 Ò³ ¹² 42 Ò³