February 17, 2004
The Binomial Distribution Table
The cumulative binomial distribution table shows the probability of X successes or fewer.
Visits Graph
The "visits" data for Stata 2 shows a seasonal pattern and a day-of-week pattern.
Can you see these patterns better in the original data, summary statistics tables, or this graph?
How about visits over week? Does this work better than visits by week? Is it clearer for some purposes than the line graph? Could you make the labels for the bars a little more professional?
Can you find the summer and Christmas in this graph?
Does it look like this spring is showing more visits than last spring?
If this were a business, how could you use statistics to understand the patterns in the data? Why would a business want to understand the patterns in the number of visits to their web site?
Homework
The assignment for Thursday 2/19 is
Chapter 5: 35,36,37,38,39,40,42,44,45,46.
For Tuesday 2/24, we will do
Chapter 5: 47,48,49,50,52 plus
from Ch. 6: 9,10,11,12,14,16,20