Date	Measured Values	True Value
10/11/04	4.8	5.0
10/12/04	4.7	5.0
10/13/04	4.5	5.0
10/14/04	4.7	5.0
10/15/04	4.4	5.0
10/16/04	4.6	5.0
10/17/04	4.9	5.0
10/18/04	5.2	5.0
10/19/04	4.2	5.0
10/20/04	5.3	5.0
Note: The mean is the average of the measured values.