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Chapter 1: Q.1.5. (page 10)
The data are the number of machines in a gym. You sample five gyms. One gym has machines, one gym has machines, one gym has ten machines, one gym has machines, and the other gym has machines. What type of data is this?
The numbers of machines are the quantitative discrete data.
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Table 1.26 contains the total number of deaths worldwide as a result of earthquakes from 2000 to 2012.
Use Table 1.26 to answer the following questions.
Forbes magazine published data on the best small firms in . These were firms which had been publicly traded for at least a year, have a stock price of at least per share, and have reported annual revenue between million and billion. Table shows the ages of the chief executive officers for the first ranked firms.
a. What is the frequency for CEO ages between 54 and 65?
b. What percentage of CEOs are 65 years or older?
c. What is the relative frequency of ages under 50?
d. What is the cumulative relative frequency for CEOs younger than 55?
e. Which graph shows the relative frequency and which shows the cumulative relative frequency?
What type of measure scale is being used? Nominal, ordinal, interval or ratio.
a. High school soccer players classified by their athletic ability: Superior, Average, Above average
b. Baking temperatures for various main dishes: 350, 400, 325, 250, 300
c. The colors of crayons in a 24-crayon box
d. Social security numbers
e. Incomes measured in dollars
f. A satisfaction survey of a social website by number: 1 = very satisfied, 2 = somewhat satisfied, 3 = not satisfied
g. Political outlook: extreme left, left-of-center, right-of-center, extreme right
h. Time of day on an analog watch
i. The distance in miles to the closest grocery store
j. The dates 1066, 1492, 1644, 1947, and 1944
k. The heights of 21–65 year-old women
l. Common letter grades: A, B, C, D, and F
Suppose you want to determine the mean number of cans of soda drunk each month by students in their twenties at your school. Describe a possible sampling method in three to five complete sentences. Make the description detailed.
How does sleep deprivation affect your ability to drive? A recent study measured the effects on professional drivers. Each driver participated in two experimental sessions: one after normal sleep and one after hours of total sleep deprivation. The treatments were assigned in random order. In each session, performance was measured on a variety of tasks including a driving simulation.
Use key terms from this module to describe the design of this experiment.
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