Question
A summary of 30 values of x gave the following information: x c = 234, x c 2 = 1957.5, where c is a constant.
A summary of 30 values of x gave the following information: x c = 234, x c 2 = 1957.5, where c is a constant. (i) Find the standard deviation of these values of x. [2] (ii) Given that the mean of these values is 86, find the value of c
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Concepts of Database Management
Authors: Philip J. Pratt, Mary Z. Last
8th edition
1285427106, 978-1285427102
