A roll of Scotch Tape has a diameter of 2.9 inches when new and 1.4 inches when used up. What is the diameter when it is half used up? I know the answer, it's aprox 2.28 inches. But, I don't know...

A roll of Scotch Tape has a diameter of 2.9 inches when new and 1.4 inches when used up. What is the diameter when it is half used up? I know the answer, it's aprox 2.28 inches. But, I don't know...

Can somebody explain me why in 'Glaister, P. (March 2001). "Least squares revisited". The Mathematical Gazette 85: 104-107.' the product of the slopes is equal to -mu when the variances...

Years after Introduction(X) Number(Y) (Xi - X) (Yi - Y) (Xi - X)(Yi - Y) 1 ...

Year Yogurt Sales (Millions of $) 0 $2,719 1 $2,898 2 $3,111 3 $3,330 4 ...

I have collected observations (y variable) from people of various ages (x variable). Some people provided multiple data points (anywhere from 2-10), whereas others provided just one. I want to see...

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