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平均数

义务教育课程标准实验教科书三年级下册. 平均数. 广州市番禺区钟村中心小学 莫静纹. 莫老师. 7. 女子队. 3+3+3 = 9 (个). 3+3+3+7 = 16 (个). 男子队. 3+4+5 = 12 (个). 平均数. ( 3+8+4 ) ÷3=5 (个). 4. ( 3+3+3+7 ) ÷4 = 4 (个). ( 3+4+5 ) ÷3 = 4 (个). ( 148+142+139+141+140 ) ÷5=142 (厘米). ( 144+146+142+145+143 ) ÷5=144 (厘米).

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平均数

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  1. 义务教育课程标准实验教科书三年级下册 平均数 广州市番禺区钟村中心小学 莫静纹

  2. 莫老师 7 女子队 3+3+3=9(个) 3+3+3+7=16(个) 男子队 3+4+5=12(个)

  3. 平均数 (3+8+4)÷3=5(个)

  4. 4 (3+3+3+7)÷4=4(个) (3+4+5)÷3=4(个)

  5. (148+142+139+141+140)÷5=142(厘米) (144+146+142+145+143)÷5=144(厘米) 平均数能较好地反映一组数据的总体情况。

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