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一、在实际情境中,经历调查、收集数据的过程．在求一组数据的平均数、中位数、众数的过程中,体会平均数、中位数、众数的差别,以及权的差异对加权平均数的影响。并能用加权平均数解释一些现象。例1秀兰怀揣登有招工启事的报纸,找到了皮革公司的经理,经理说：“我们这里报酬不低,启事你也看了,平均工资是1200元,你在学徒期间每月300元,不过很快就可以加工资。”秀兰工作了几天以后,又去
1. In the actual situation, experience the process of surveying and collecting data. In the process of calculating the average, median, and mode of a group of data, the difference between the mean, median, and mode, and the effect of the difference in weight on the weighted average. And can use the weighted average to explain some phenomena. Example 1 Xiu Lanhuai published a newspaper with a recruitment notice and found the manager of the leather company. The manager said: “We are paying well here. You have also read the notice. The average salary is 1,200 yuan. During your apprenticeship, it is 300 yuan per month. But soon the capital can be processed."