4 the nean of the numbers \( 1,3,4,(k-5), 7 \), \( (k-1) \) and 8 is 5. find \( a \). The value of \( k \) b. The standard deviation of the distribution.
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To find the mean, we add up all the numbers and divide by the total number of numbers. Mean = (1 + 3 + 4 + (k-5) + 7 + (k-1) + 8) / 7 Mean = (1 + 3 + 4 + k - 5 + 7 + k - 1 + 8) / 7 Mean = (2k + 17) / 7 Show more…
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