ÌâÄ¿ÄÚÈÝ
½â´ðÌ⣮
ijУѧÉú»ý¼«ÎªµØÕðÔÖÇø¾è¿î·îÏ×°®ÐÄ£®Ð¡Ó±Ëæ»ú³é²éÆäÖÐ30ÃûѧÉúµÄ¾è¿îÇé¿öÈçÏ£º£¨µ¥Î»£ºÔª£©2¡¢5¡¢35¡¢8¡¢5¡¢10¡¢15¡¢20¡¢15¡¢5¡¢45¡¢10¡¢2¡¢8¡¢20¡¢30¡¢40¡¢
10¡¢15¡¢15¡¢30¡¢15¡¢8¡¢25¡¢25¡¢30¡¢15¡¢8¡¢10¡¢50£®
£¨1£©Õâ30ÃûѧÉú¾è¿îµÄ×î´óÖµ¡¢×îСֵ¡¢¼«²î¡¢Æ½¾ùÊý¸÷ÊǶàÉÙ£¿
£¨2£©½«30ÃûѧÉú¾è¿î¶î·Ö³ÉÏÂÃæ5×飬ÇëÄãÍê³ÉƵÊýͳ¼Æ±í£º
£¨3£©¸ù¾ÝÉÏ±í£¬×÷³öƵÊý·Ö²¼Ö±·½Í¼£®
½â£º£¨1£©Õâ30ÃûѧÉú¾è¿îµÄ×î´óֵΪ50£¬
×îСֵΪ2£¬
¼«²îΪ50-2=48£¬
ƽ¾ùÊýΪ£¨2+5+35+8+5+10+15+20+15+5+45+10+2+8+20+30+40+10+15+15+30+15+8+25+25+30+15+8+10+50£©¡Â30=17.7Ôª£®
£¨2£©Ìî±íÈçÏ£º
£®
£¨3£©»Í¼ÈçÏ£º

·ÖÎö£º£¨1£©¸ù¾Ý¸ø³öµÄÊý¾ÝÒÔ¼°¼«²î¡¢Æ½¾ùÊýµÄ¼ÆËã·½·¨Ö±½Ó¼ÆËã¼´¿É½â´ð£®
£¨2£©·Ö±ðÕÒ³ö¸÷×éµÄÈËÊýÌî±í¼´¿É½â´ð£®
£¨3£©¸ù¾ÝƵÊý·Ö²¼±í»³öƵÊý·Ö²¼Ö±·½Í¼¼´¿É½â´ð£®
µãÆÀ£º±¾ÌâÖ÷Òª¿¼²é¼«²î¡¢Æ½¾ùÊýµÄ¶¨ÒåÒÔ¼°»ÆµÊý·Ö²¼Ö±·½Í¼µÄÄÜÁ¦£¬ÕýÈ·»Í¼Êǹؼü£®
×îСֵΪ2£¬
¼«²îΪ50-2=48£¬
ƽ¾ùÊýΪ£¨2+5+35+8+5+10+15+20+15+5+45+10+2+8+20+30+40+10+15+15+30+15+8+25+25+30+15+8+10+50£©¡Â30=17.7Ôª£®
£¨2£©Ìî±íÈçÏ£º

£¨3£©»Í¼ÈçÏ£º

·ÖÎö£º£¨1£©¸ù¾Ý¸ø³öµÄÊý¾ÝÒÔ¼°¼«²î¡¢Æ½¾ùÊýµÄ¼ÆËã·½·¨Ö±½Ó¼ÆËã¼´¿É½â´ð£®
£¨2£©·Ö±ðÕÒ³ö¸÷×éµÄÈËÊýÌî±í¼´¿É½â´ð£®
£¨3£©¸ù¾ÝƵÊý·Ö²¼±í»³öƵÊý·Ö²¼Ö±·½Í¼¼´¿É½â´ð£®
µãÆÀ£º±¾ÌâÖ÷Òª¿¼²é¼«²î¡¢Æ½¾ùÊýµÄ¶¨ÒåÒÔ¼°»ÆµÊý·Ö²¼Ö±·½Í¼µÄÄÜÁ¦£¬ÕýÈ·»Í¼Êǹؼü£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿