Do not include anything other than numbers in your responses. For example, do not comma or dollar sign in your numbers. As a rule of thumb, keep 2 decimal places for numbers and 3 decimal places for smaller numbers less than 1. Consider the following data. We want to monitor the forecasts. Period Demand Forecasts 1 264 -- 2 256 264 3 287 256 4 285 287 5 320 285 Calculate the UCL and LCL for the appropriate control chart to control magnitude of Calculate the cumulative error, MAD, and tracking signals of periods 2 through 5 and the forecasts are biased. Keep two decimal places in your calculations. Period Errors Cumulative Errors MADS 1 2 Tracking Signals 3 4 5 Are forecast errors biased? (Yes/No) yes