Cost of Memory Graph

Cost of Memory September, 1998
The graph shows that in general, the cost per bit increases with the capacity of the storage module, but not uniformly.

There are a few points to observe about the structure of this graph, aside from the information content:

  1. The Y axis is used to represent the values computed from the numbers provided. In general, the Y axis represents the dependent variable, and the X axis represents the independent variable.
  2. The data points are connected with straight lines. Unless you are doing "curve fitting," which means to develop a formula to represent the shape of the function, never use curved lines to connect data points.
  3. The Unit size for the Y access is microcents per bit. You were asked to calculate the cost in cents per bit, but you should scale the data so that the axis can be labeled with integer values.
  4. The title of the graph conveys the overall content of the graph, and the axis labels give the units of measure used for the numerical values shown.