Common Creativity Tools and Techniques • 129
3. Compare the spike or dip with a baseline having a normal pattern of
behavior. e dierences may reveal clues to come up with a creative
idea that could improve the overall pattern of behavior.
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Some ways to use a trend chart on a project include:
• Identifying whether certain threats are rising or declining over time
• Plotting the number of change requests over time
• Tracking the number of defects over time
• Tracking earned value, such as schedule performance index
overtime
• Tracking the number of missed milestones over time
Statistical Process Control Chart
Also referred to as an SPC chart, the statistical process control chart is
another quality technique that can help enable creativity. Like the trend
chart discussed in this chapter, the key is to focus on anomalous data
points to provide clues for creative ideas. e SPC chart treats anomalies
as something requiring further investigation, oen resulting in corrective
action. e SPC chart has an upper and lower control limit, and a range
above and below the mean. Over time, plots of discrete data points occur.
Ideally, these plots all fall around the mean. However, sometimes plots
go above or below the range, indicating an anomaly; sometimes seven
or more successive plots on either side of the mean exist, also indicat-
ing anomalies. ese are anomalies that may provide an opportunity to
develop creative ideas rather than treating them as “defects.”
Keep in mind the following when using SPC charts:
1. Like the trend chart, the span of time is important. Too short of a
time span and the opportunity to discover an anomaly is gone. e
span of time is a judgment call.
2. Remember that anomalies can be good, but not all are. ey simply
provide the basis for creative thinking.
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Some ways to use a statistical process control chart on a project include:
• Assessing the stability of a specic process
• Recording quality of deliverables to identify anomalous results