As x increases,y increases,but at a decreasing rate.If a second-order polynomial model were fitted to the scatter plot of the data,what would be the signs of the partial regression coefficients in the model?

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The Answer of As x increases,y increases,but at a decreasing rate.If a second-order polynomial model were fitted to the scatter plot of the data,what would be the signs of the partial regression coefficients in the model?

As X Increases,y Increases,but at a Decreasing Rate