| Searching for Certainty | November 6, 2001 |
| Statistics in Market Research | February 6, 2004 |
| A Guide for the Statistically Perplexed | January 14, 2013 |
| Searching for Certainty | November 6, 2001 |
| Statistics in Market Research | February 6, 2004 |
| A Guide for the Statistically Perplexed | January 14, 2013 |