Chapter 10 - Introduction to Statistics
Refer to Table 10.8 on page 253. Looking at the scores from both classes, what can you say about each of them? How do the performances of the students compare? What would happen to the Z-scores in the Second Roommate's Section of the student who received a score of 73 were eliminated?
Compute the mode, median, mean, and Z-scores for the following data set: 8, 9, 9, 15, 15, 15, 22, 24, 25, 32,36, 42, 44, 47, 50.
Check the Internet for any recent articles about the normal curve.
Assume for a moment that there are two classes of mass media research in your department or school. On a recent standardized test that had a maximum of 100 points, Class A had a variance of 32.5 and Class B had a variance of 8.3. What do these two numbers tell you about the two classes?
Z-scores can be computed on any data set. Why is that?
What would you know about a data set that had a variance and standard deviation of zero? What would be the mode, median, and mean for this data set?
Assume that you are looking at a distribution of demographic characteristics of people who access the Internet. What is this distribution going to look like as more people buy computers and have access to the Internet?