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Chapter 1: Q 7. (page 8)

Ranking colleges Popular magazines rank colleges and universities on their 鈥渁cademic quality鈥� in serving undergraduate students. Describe two categorical variables and two quantitative variables that you might record for each institution.

Short Answer

Expert verified

Categorical Categories:

  • Range of staff-to-student ratios
  • average GPA

Quantitative Variables:

  • Average starting salary,
  • percentage of students employed after graduation

Step by step solution

01

Step 1. Given information.

The given statement is:

In serving undergraduate students, popular magazines assess colleges and institutions based on their "academic quality."

02

Step 2. Give examples of two categorical and two quantitative variables.

Variables that can be used to rate schools and universities according to academic quality include:

Variables in Categorical Categories: Range of staff-to-student ratios, average GPA

Quantitative Variables: Average starting salary, percentage of students employed after graduation

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Most popular questions from this chapter

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(a) What proportion of subjects who said they saw broken glass at the accident received the 鈥渉it鈥� treatment?

(b) What percent of subjects who received the 鈥渟mashed into鈥� treatment said they did not see broken glass at the accident?

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(a) The distribution of car colors for vehicles purchased in the last month

(b) The distribution of unemployment percentages for each of the 50 states

(c) The distribution of favorite sport for a sample of 30 middle school students (d) The distribution of shoe type worn by shoppers at a local mall

(e) The distribution of presidential candidate preferences for voters in a state

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Find two different sets of counts a, b, c, and dfor the body of the table that give these same totals. This shows that the relationship between two variables cannot be obtained from the two individual distributions of the variables.

Simpson鈥檚 paradoxAccident victims are sometimes taken by helicopter from the accident scene to a hospital. Helicopters save time. Do they also save lives? The two-way table summarizes data from a sample of patients who were transported to the hospital by helicopter or by ambulance.

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(c) See if you can explain how the result in part (a) is possible given the result in part (b).

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