The variance of a sample was reported to be 144. The report indicated that $$\sum (x-\bar{x})^2 = 7200$$. What is the sample size?
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The sample variance ($s^2$) is 144. 2. The sum of the squared differences from the mean ($\sum (x-\bar{x})^2$) is 7200. We need to find the sample size ($n$). Show more…
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