Find the variance of 11, 12, 13, 14 and 15.

Assessment: WAEC SSCE - Further Mathematics - 2016 (Objective) Subject: Further Mathematics

Question 1 Report

Find the variance of 11, 12, 13, 14 and 15.

Answer Details
To find the variance, first we need to calculate the mean of the given data set: Mean = (11+12+13+14+15)/5 = 13 Next, we subtract the mean from each data point and square the differences: (11-13)^2 = 4 (12-13)^2 = 1 (13-13)^2 = 0 (14-13)^2 = 1 (15-13)^2 = 4 Then, we find the average of the squared differences: (4+1+0+1+4)/5 = 2 Therefore, the variance of the given data set is 2. Answer is correct.
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