This page was last modified 1 March 2004. It is maintained by Mick Keough
As more people read through the text, we discover things that were very clear in our own minds, but less clear in our audience's.
| Location | Problem |
| P. 157 | In equation 7.4, d is either expressed as an absolute value, or both d and s are expressed as proportions of the mean. For example, if we wish to be sure that the mean is within 10% of the true mean of 23, we'd use 10% of the true mean as the value of d, i.e., 2.3, and s as our estimate of s. If we wanted to use d = 0.1, i.e., the proportion of the mean, we would also convert s to a proportion of the mean (i.e., use the coefficient of variation) |