Last month 15 homes were sold in Town X. the average sale price of the homes was $150,000 and the median sale price was $130,000. which of the following statements must be true?
1. at least one of the homes was sold for more than $165,000
2. at least one of the homes was sold for more than $130,000 and less than $150.000
3. at least one of the homes was sold for more than $130,000
哦。。。 看错了。。 应该是1 , statement 3的错误在于 说 at least one of the homes was sold for more than 130,000, 但根据题干说median是130,000,所以应该能确定的是至少有一套房以130,000卖出,而不是more than这个价钱。 1 正确很明显啊, 平均值150,000,而且又有房价确定低于平均值, 所以肯定得有房价高于这个平均值。