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Week Five Assignment: Chapters 15, 16, and 17

Suppose you were preparing two-way tables of percentages for the following pairs of variables. How would you run the percentages?

a. Age and consumption of breakfast cereal. I would use cross tabulation technique that is defined as a technique for comparing data from two or more categorical variables (Cooper & Schindler, 2011). I would list the age in the left most column. Each row would represent a range of ages , and then following columns would be the type of cereal consumed depending on what questions are asked and those outcomes.

b. Family income and confidence about the family’s future. I would use cross tabulation technique. In the left most columns I would list the income ranges and each row would relate to multiple ranges of family income. The other columns would list a percentage relating whether those in that income bracket felt confident from a scale of 1-5 (5 being the most confident and 1 being the least confident).

c. Marital status and sports participation. I would use the cross tabulation technique. I would list married and unmarried, and then each column would represent a sport and the percentage of how many participated in that sport. The last column would list no sports for those who do not play a sport at all.

d. Crime rate and unemployment rate. I would use the cross tabulation technique. I would list the crime rate ranges on the left. Each row would represent the range. Then each column would list the range of unemployment.

From Concept to Practice

Use the data in Exhibit 16-5 to construct a stem and leaf display.

5|13 15 17 19 21

10|9 11

15| 5

20|7

a. Where do you find the main body of the distribution? The main body of the distribution is in more than zero but less than five.

b. How many values reside outside the inner fence (s)? There are three values that reside outside the inner fences and they are 17, 19, 21.

Discussion Questions for “Inquiring Minds Want...