Which of these is another form of the cumulative sum value plotted on the cumulative sum chart?
Posted: Thu Jul 14, 2022 1:54 pm
a) \(C_i=(x_i-μ)+\sum_{j=1}^{i-1} (x_j+μ)\)
b) \(C_i=(x_i-μ)+C_{i-1}\)
c) \(C_i=(x_i-μ)+\sum_{j=1}^{i-1} (x_j+2μ)\)
d) \(C_i=(x_i-μ)-C_{i-1}\)
b) \(C_i=(x_i-μ)+C_{i-1}\)
c) \(C_i=(x_i-μ)+\sum_{j=1}^{i-1} (x_j+2μ)\)
d) \(C_i=(x_i-μ)-C_{i-1}\)