| This
chart indicates that size is a major factor in profitability. Smaller
companies have higher margins in the industry. But, the data
is highly scattered suggesting that other factors are also at
work. |
This
chart indicates that the number of product lines has a more
direct influence. The slope of the linear regression line is
slightly steeper than the line for size and there is less
scatter in the data.
Adapted from: Hayes, Robert H.,
& Wheelwright, Steven C., Restoring Our Competitive
Edge, Wiley, 1984
|