4.7 Consider the data in the Thomson experiment for Tube 1 and the fact that the variables W=Q and I are related to the variable v via the relationship v D 2W QI

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Calculate the sample mean and variance of v from the direct measurements of this variable, and then using the measurements of W=Q and I and the error propagation formulas. By comparison of the two estimates of the variance, determine if there is a positive or negative correlation between W=Q and I.