5.73.* You know the sample mean y of n observations. Once you know (n1) of the observations,...
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5.73.* You know the sample mean ¯y of n observations.
Once you know (n−1) of the observations, show that you can find the remaining one. In other words, for a given value of ¯y, the values of (n − 1) observations determine the remaining one. In summarizing scores on a quantitative variable, having (n − 1) degrees of freedom means that only that many observations are independent.
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