For the
CUSUM chart: assuming that the UDP and ICMP source bytes are normally distributed, with mean [[micro].sub.0] and standard deviation [sigma].
The risk-adjusted
cusum chart was calculated by adding 1 minus the individual patient risk score to the cumulative score for each failure and subtracting the risk score for each failed attempt.
The
CUSUM chart may indicate that at least one and possibly two changes took place.
The first chart has a tighter control limit which requires a smaller sample size, and the second one is a
CUSUM chart.
The
CUSUM chart readily detected changes in the mean moisture content that were not detected with an X-chart.
The Shewhart chart in Figure 2a shows that Trials 25, 26, 27, and 35 are "out of control." The same data (standardized and accumulated) are presented in a
CUSUM chart (Figure 2b).
The resulting
CUSUM chart for the discharge air temperature can be seen in Fig.
A
cusum chart for monitoring a proportion when inspecting continuously.
To determine the impact of autocorrelation, the data were plotted using the Shewhart individuals chart, the moving average chart, the
Cusum chart, and the EWMA chart.
The EWMA control chart differs from the similar
Cusum chart by using the additional weighting factor, which allows the adjustment of shift sensitivity.
The Quangle--a modification of the
Cusum chart. Appl Statistics 1982;31:155-8.