Mathematics, 08.09.2021 06:30 HarryPotter10

Theo dõi phát triển dân số xã X thu được số liệu sau: Z năm X (số dân, người) Y (tỷ lệ chết, đv: 1)
2016 4.670 0,0099
2017 4.860 0,0074
2018 5.050 0,0099
2019 5.170 0,0064
2020 5.470 0,0059

a) Tính hệ số tương quan rxy và cho nhận xét ?
b) Hỏi năm 2021 dân số xã X là bao nhiêu

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Theo dõi phát triển dân số xã X thu được số liệu sau: Z năm X (số dân, người) Y (tỷ lệ chết, đv: 1...

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