Question: (12 points) For three data points ( 10). (8). (8). (a) Derive the sample mean. (b) Derive the unbiased sample covariance matrix. (c) Explain one

(12 points) For three data points ( 10). (8). (8). (a)
Derive the sample mean. (b) Derive the unbiased sample covariance matrix. (c)

(12 points) For three data points ( 10). (8). (8). (a) Derive the sample mean. (b) Derive the unbiased sample covariance matrix. (c) Explain one of the diagonal entries in the covariance matrix (e.g., if your on1 = c, intuitively explain why it is equal to c here)

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