Question 10.37

10.37 Computer memory.

The capacity of memory commonly available at retail has increased rapidly over time.16

mem

510

  1. Make a scatterplot of the data. Growth is much faster than linear.
  2. Plot the logarithm of capacity against year. Are these points closer to a straight line?
  3. Regress the logarithm of DRAM capacity on year. Give a 90% confidence interval for the slope of the population regression line.
  4. Write a brief summary describing the change in memory capacity over time using the confidence interval from part (c).

10.37

(b) The points are much closer to a straight line. (c) (0.37305, 0.43643). (d) For each year, capacity of memory (in log Kbytes) increases between 0.37305 and 0.43643 with 90% confidence.