Graphic Methods for Presenting Facts
In a conference betw^een the sales, engineering, and manufacturing heads of this business, it was decided that the quantity of automobiles desired was fifty per week until the first of April, then sixty per week until the first of June, and seventy per week thereafter, giving a total production of three thousand two hundred automobiles for the whole season. It w^as thought that the rate of production on the new model automobile could be increased after the factory had been put into thoroughly good running shape, and the schedule rate of production was accordingly increased gradually in the manner shown. On account of the delay in getting drawings
GRAPHIC METHODS
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Fig. 134. Production Schedule and Actual Output of an Automobile Factory for
One Year
The schedule is shown by the straight lines drawn according to the desired output per week. Actual output is indicated by the waving line showing at any date the total number of autos shipped since the beginning of the year. Note the co-ordinate paper of letter-sheet size and the scheme for marking off weeks and months so that any fiscal year may be shown on this standard ruled paper
from the engineering department, the factory was able to ship practically no cars during the month of January, though the schedule shows that one hundred and fifty cars should have been made that month. During February, the factory produced cars but fell further behind schedule constantly, as can be seen by the difference between the angle of the schedule line for February and the angle of the actual output line for February.