07:07

Mihir N.

Table 1.7 shows data for seven colleges and universities. The endowment fin billions of dollars) and the percentage of applicants admitted are shown $(U S A$ Today, February $3,$ $2008 ) .$ The state each school is located in, the campus setting, and the NCAA Division for varsity teams were obtained from the National Center of Education Statistics website, February $22,2008$ . a. How many elements are in the data set? b. How many variables are in the data set? c. Which of the variables are categorical and which are quantitative?

06:37

Mihir N.

The Financial Times/Harris Poll is a monthly online poll of adults from six countries in Europe and the United States. A January poll included 1015 adults in the United States. One of the questions asked was, "How would you rate the Federal Bank in handling the credit problems in the financial markets?" Possible responses were Excellent, Good, Fair, Bad, and Terrible (Harris Interactive website, January $2008 ) .$ a. What was the sample size for this survey? b. Are the data categorical or quantitative? c. Would it make more sense to use averages or percentages as a summary of the data for this question? d. Of the respondents in the United States, 10$\%$ said the Federal Bank is doing a good job. How many individuals provided this response?

07:54

Mihir N.

The Bureau of Transportation Statistics Omnibus Household Survey is conducted annually and serves as an information source for the U.S. Department of Transportation. In one part of the survey the person being interviewed was asked to respond to the following statement: "Drivers of motor vehicles should be allowed to talk on a hand-held cell phone while driving." Possible responses were strongly agree, somewhat agree, somewhat disagree, and strongly disagree. Forty-four respondents said that they strongly agree with this statement,130 said that they somewhat agree, 165 said they somewhat disagree, and 741 said they strongly disagree with this statement (Bureau of Transportation website, August 2010$)$ . a. Do the responses for this statement provide categorical or quantitative data? b. Would it make more sense to use averages or percentages as a summary of the responses for this statement? c. What percentage of respondents strongly agree with allowing drivers of motor vehicles to talk on a hand-held cell phone while driving? d. Do the results indicate general support for against allowing drivers of motor vehicles to talk on a hand-held cell phone while driving?

01:45

Bryan L.

Figure 1.11 provides a bar chart showing the amount of federal spending for the years 2004 to 2010 (Congressional Budget Office website, May $15,2011 ) .$ a. What is the variable of interest? b. Are the data categorical or quantitative? c. Are the data time series or cross-sectional? d. Comment on the trend in federal spending over time.