ÌâÄ¿ÄÚÈÝ
°à»á¿Îʱ£¬ÀÏʦ×éÖ¯¼×¡¢ÒÒÁ½°àͬѧ½øÐÐͶÀº±ÈÈü£¬Ã¿°à¸÷³é5ÃûÄÐÉúºÍ5ÃûÅ®Éú½øÐÐͶÀº£¬Ã¿È˸÷Ͷ5´Î£¨Å®ÉúͶÀº´¦¾àÀëÀº¿ð±ÈÄÐÉú½ü£©£¬³É¼¨¼Ç¼ÈçÏÂ±í£ºÍ¶½øÀº¿ð¸öÊý | 0 | 1 | 2 | 3 | 4 | 5 |
¼×°àѧÉúÈËÊý | 1 | 3 | 1 | 2 | 1 | 2 |
ÒÒ°àѧÉúÈËÊý | 0 | 1 | 2 | 4 | 2 | 1 |
£¨1£©¼×¡¢ÒÒÁ½°àµÄͶÀºÆ½¾ù³É¼¨Äĸö¸üºÃ£¿
£¨2£©¼×¡¢ÒÒÁ½°àµÄͶÀº³É¼¨ÄĸöÎȶ¨£¿
£¨2£©¸ù¾Ý·½²î¹«Ê½¼ÆËãºó£¬ÓÉ·½²îµÄÒâÒå·ÖÎö£®
ÒÒ°àµÄͶÀºÆ½¾ù³É¼¨=£¨1¡Á1+2¡Á2+4¡Á3+2¡Á4+1¡Á5£©¡Â10=3£¬
¡à´Óƽ¾ù³É¼¨ÉÏ¿´£¬ÒÒ°àµÄ³É¼¨ºÃ£»
£¨2£©¼×°àµÄ·½²îS¼×2=[1¡Á£¨0-2.5£©2+3¡Á£¨1-2.5£©2+£¨2-2.5£©2+2¡Á£¨3-2.5£©2+£¨4-2.5£©2+2¡Á£¨5-2.5£©2]¡Â10=2.85¸ö2£¬
ÒÒ°àµÄ·½²îSÒÒ2=[£¨1-3£©2+2¡Á£¨2-3£©2+4¡Á£¨3-3£©2+2¡Á£¨4-3£©2+£¨5-3£©2]¡Â10=1.2¸ö2£¬
¡ßS¼×2£¾SÒÒ2£¬
¡à´Ó·½²îÉÏ¿´ÒÒ°àµÄ³É¼¨Îȶ¨£®
. |
x |
1 |
n |
. |
x |
. |
x |
. |
x |
£¨10·Ö£©°à»á¿Îʱ£¬ÀÏʦ×éÖ¯¼×¡¢ÒÒÁ½°àͬѧ½øÐÐͶÀº±ÈÈü£¬Ã¿°à¸÷³é5ÃûÄÐÉúºÍ5ÃûÅ®Éú½øÐÐͶÀº£¬Ã¿È˸÷Ͷ5´Î£¨Å®ÉúͶÀº´¦¾àÀëÀº¿ð±ÈÄÐÉú½ü£©£¬³É¼¨¼Ç¼ÈçÏÂ±í£º
Ͷ½øÀº¿ð¸öÊý | 0 | 1 | 2 | 3 | 4 | 5 |
¼×°àѧÉúÊý | 1 | 3 | 1 | 2 | 1 | 2 |
ÒÒ°àѧÉúÊý | 0 | 1 | 2 | 4 | 2 | 1 |
¸ù¾ÝÒÔÉÏÌṩµÄÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ
£¨1£©¼×¡¢ÒÒÁ½°àµÄͶÀºÆ½¾ù³É¼¨Äĸö¸üºÃ£¿£¨2£©¼×¡¢ÒÒÁ½°àµÄͶÀº³É¼¨ÄĸöÎȶ¨£¿
Ͷ½øÀº¿ð¸öÊý | 0 | 1 | 2 | 3 | 4 | 5 |
¼×°àѧÉúÊý | 1 | 3 | 1 | 2 | 1 | 2 |
ÒÒ°àѧÉúÊý | 0 | 1 | 2 | 4 | 2 | 1 |
£¨1£©¼×¡¢ÒÒÁ½°àµÄͶÀºÆ½¾ù³É¼¨Äĸö¸üºÃ£¿£¨2£©¼×¡¢ÒÒÁ½°àµÄͶÀº³É¼¨ÄĸöÎȶ¨£¿
£¨10·Ö£©°à»á¿Îʱ£¬ÀÏʦ×éÖ¯¼×¡¢ÒÒÁ½°àͬѧ½øÐÐͶÀº±ÈÈü£¬Ã¿°à¸÷³é5ÃûÄÐÉúºÍ5ÃûÅ®Éú½øÐÐͶÀº£¬Ã¿È˸÷Ͷ5´Î£¨Å®ÉúͶÀº´¦¾àÀëÀº¿ð±ÈÄÐÉú½ü£©£¬³É¼¨¼Ç¼ÈçÏÂ±í£º
Ͷ½øÀº¿ð¸öÊý | 0 | 1 | 2 | 3 | 4 | 5 |
¼×°àѧÉúÊý | 1 | 3 | 1 | 2 | 1 | 2 |
ÒÒ°àѧÉúÊý | 0 | 1 | 2 | 4 | 2 | 1 |
£¨1£©¼×¡¢ÒÒÁ½°àµÄͶÀºÆ½¾ù³É¼¨Äĸö¸üºÃ£¿£¨2£©¼×¡¢ÒÒÁ½°àµÄͶÀº³É¼¨ÄĸöÎȶ¨£¿
£¨10·Ö£©°à»á¿Îʱ£¬ÀÏʦ×éÖ¯¼×¡¢ÒÒÁ½°àͬѧ½øÐÐͶÀº±ÈÈü£¬Ã¿°à¸÷³é5ÃûÄÐÉúºÍ5ÃûÅ®Éú½øÐÐͶÀº£¬Ã¿È˸÷Ͷ5´Î£¨Å®ÉúͶÀº´¦¾àÀëÀº¿ð±ÈÄÐÉú½ü£©£¬³É¼¨¼Ç¼ÈçÏÂ±í£º
Ͷ½øÀº¿ð¸öÊý |
0 |
1 |
2 |
3 |
4 |
5 |
¼×°àѧÉúÊý |
1 |
3 |
1 |
2 |
1 |
2 |
ÒÒ°àѧÉúÊý |
0 |
1 |
2 |
4 |
2 |
1 |
¸ù¾ÝÒÔÉÏÌṩµÄÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ
£¨1£©¼×¡¢ÒÒÁ½°àµÄͶÀºÆ½¾ù³É¼¨Äĸö¸üºÃ£¿£¨2£©¼×¡¢ÒÒÁ½°àµÄͶÀº³É¼¨ÄĸöÎȶ¨£¿