在一组样本数据(x1,y1),(x2,y2),…,(xn,yn)(n≥2,x1,x2,…,xn不全相等)的散点图中,若所有样本点(xi,yi)(i=1,2,…,n)都在直线y=1/2x+1上,则这组样本数据的样本相关系数为 A.-1 B.0 C.1/2 D
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![在一组样本数据(x1,y1),(x2,y2),…,(xn,yn)(n≥2,x1,x2,…,xn不全相等)的散点图中,若所有样本点(xi,yi)(i=1,2,…,n)都在直线y=1/2x+1上,则这组样本数据的样本相关系数为 A.-1 B.0 C.1/2 D](/uploads/image/z/14509303-7-3.jpg?t=%E5%9C%A8%E4%B8%80%E7%BB%84%E6%A0%B7%E6%9C%AC%E6%95%B0%E6%8D%AE%EF%BC%88x1%2Cy1%EF%BC%89%2C%EF%BC%88x2%2Cy2%EF%BC%89%2C%E2%80%A6%2C%EF%BC%88xn%2Cyn%EF%BC%89%EF%BC%88n%E2%89%A52%2Cx1%2Cx2%2C%E2%80%A6%2Cxn%E4%B8%8D%E5%85%A8%E7%9B%B8%E7%AD%89%EF%BC%89%E7%9A%84%E6%95%A3%E7%82%B9%E5%9B%BE%E4%B8%AD%2C%E8%8B%A5%E6%89%80%E6%9C%89%E6%A0%B7%E6%9C%AC%E7%82%B9%EF%BC%88xi%2Cyi%EF%BC%89%EF%BC%88i%3D1%2C2%2C%E2%80%A6%2Cn%EF%BC%89%E9%83%BD%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3D1%2F2x%2B1%E4%B8%8A%2C%E5%88%99%E8%BF%99%E7%BB%84%E6%A0%B7%E6%9C%AC%E6%95%B0%E6%8D%AE%E7%9A%84%E6%A0%B7%E6%9C%AC%E7%9B%B8%E5%85%B3%E7%B3%BB%E6%95%B0%E4%B8%BA+A%EF%BC%8E-1+B%EF%BC%8E0+C%EF%BC%8E1%2F2+D)
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