Question: Write a function to calculate sample variance of an array of numbers. Hint: = {1, , }, sample variance S 2 = (xi X) n
Write a function to calculate sample variance of an array of numbers. Hint: = {1, , }, sample variance S 2 = (xi X) n i=1 1 , in which = =1 ? describe your code 
Q6. (15 marks) Write a function to calculate sample variance of an array of numbers. Hint: X = {x1, ..., xn}, sample variance S2 - (xi-x) in which X = 97_, xi? n-1 n
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