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6-63.

Every hour, Katie’s Konfections weighs a sample of chocolates from their manufacturing process. For each of the process control charts below, describe whether the process is in control, and if not, what in the manufacturing process could have led to the out-of-control state.

 Line graph, with 5 horizontal lines, creating 4 spaces. Points are connected from left to right in these spaces as follows: 1, 4, 4, 2, 2, 2, 3, 2, 3, 3, 1, 3, 2, 4, 1, 2, 3, 2, 4, 1. Note: within each space, there is variability in the points' heights.    Line graph, with 5 horizontal lines, creating 4 spaces. Points are connected from left to right in these spaces as follows: 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 3, 2, 3, 3, 3, 2, 2, 3. Note: within each space, there is variability in the points' heights..  Line graph, with 5 horizontal lines, creating 4 spaces. Points are connected from left to right in these spaces as follows: 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 2, 2, 2, 2, 3. Note: within each space, there is variability in the points' heights.

This process is out of control. Why might this happen?

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