DSSTSTAT.150 Solve an Integrated Correlation-and-Regression Problem
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In a sample of support inbox weeks, x is messages received in hundreds and y is response time index. The fitted linear model is y-hat = 27.9 + 1.1x, with correlation r = 0.52. The observed x-values in the sample range from 1.0 to 13.0. The point cloud is roughly linear, and the point at x = 3.0 has actual y = 39.2. Which conclusion is most defensible from all the evidence?