The following VBA function computes the sample standard deviation of a user-defined array of integers. The array indices are 0, 1, ..., n. Complete the code in line (6) below such that the sum of squared differences is stored in a variable named SumSq.

Be careful about uppercase and lowercase letters in your response!

1. Function StdDev(n As Long, SampleArray() As Integer)
2. Dim i As Integer
3. Dim avg As Single, SumSq As Single
4. avg = Mean(n, SampleArray)
5. SumSq = 0
6. Answer ?
7. SumSq = SumSq + (SampleArray(i) - avg) ^ 2
8. Next i
9. StdDev = Sqr(SumSq / n)

End Function