Step 4 The next value to find is the sum of squares due to error SSE The formula is given below where n is the number of observations for treatment and s2 is the variance for treatment j n 1 s SSE 2 sc SC It was previously determined that there are k 3 populations being compared and n nB nc 5 The sample variances were given to be SA 8 50 s 5 00 and these values to calculate SSE SSE n 1 s jul 2 A 1 SA nB 1 SB nc 1 sc 5 1 8 50 5 1 5 00 5 1 9 00 Use