Exam 25: Exploring and Collecting Data

Use the following to answer the question(s) below. Boxplots of earnings per share (EPS) data for a sample of retail company stocks and a sample of energy company stocks are shown below. -Which of the following statements is true about the distributions of EPS for retail and energy stocks?

Below is a stem-and-leaf display of prices for a sample homes recently sold in a metropolitan area in Canada. Which of the following statements is true?

If a parameter is computed from a set of data, which of the following statements is true?

Real estate agencies also keep track of housing prices in a given area. Suppose they also provide their clients with quarterly median selling prices for homes in a given area for the past three year period. These data are

Suppose a sample of 60 business majors revealed that the average time spent studying per week is 22 hours with a standard deviation of 4 hours. For one student reporting that he studies 16 hours per week, the corresponding z score is

Suppose a sample of 60 crates has a mean of 12.1 kilograms and a standard deviation of 0.05 kilograms. If a crate has 12 kilograms, what is its corresponding z score?

Use the following to answer the question(s) below. Boxplots of earnings per share (EPS) data for a sample of retail company stocks and a sample of energy company stocks are shown below. -Which of the following statements is correct?

Statscan compiles data on a number of variables. Which of the following Statscan variables is categorical?

Use the following to answer the question(s) below. A magazine that publishes product reviews conducted a survey of teenagers' preferences for cell phones. Three brands of cell phone designed specifically with teens in mind were the focus of the study. The table summarizes responses by brand and gender. -Which of the following charts would be appropriate for displaying the marginal distribution of brands?

What type of variable is the style of a home (bungalow, split level, ranch etc)?

What type of variable is category of workplace injuries (slip and fall, stress related, etc.)?

Which is true for the data shown in the histogram? I. The distribution is skewed to the right. II. The mean is probably smaller than the median. III. It is appropriate to summarize these data with the mean and standard deviation.

Statscan publishes the monthly CPI (consumer price index). This index shows the change in prices paid by urban consumers for a market basket of goods and services. These data are

Use the following to answer the question(s) below. A magazine that publishes product reviews conducted a survey of teenagers' preferences for cell phones. Three brands of cell phone designed specifically with teens in mind were the focus of the study. The table summarizes responses by brand and gender. -What percent of teenagers who preferred the BlackJack II were males?

Use the following to answer the question(s) below. A recent survey of online shoppers asked them to indicate the primary reason they shop via the Internet. The table summarizes responses by reason and gender. -What percent of respondents cite Convenience as the primary reason they shop online?

Use the following to answer the question(s) below. A consumer magazine evaluated the price and performance of 23 models of cordless phones. Computer output gives these summaries for the prices ($): -Based on the summary statistics, which of the following is true?

Use the following to answer the question(s) below. A magazine that publishes product reviews conducted a survey of teenagers' preferences for cell phones. Three brands of cell phone designed specifically with teens in mind were the focus of the study. The table summarizes responses by brand and gender. -What percent of female teenagers preferred the Sidekick LX?

Use the following to answer the question(s) below. A magazine that publishes product reviews conducted a survey of teenagers' preferences for cell phones. Three brands of cell phone designed specifically with teens in mind were the focus of the study. The table summarizes responses by brand and gender. -What percent of teenagers preferred LG Rumour?

Use the following to answer the question(s) below. A recent survey of online shoppers asked them to indicate the primary reason they shop via the Internet. The table summarizes responses by reason and gender. -What percent of males cite Convenience as the primary reason they shop online?

Use the following to answer the question(s) below. A consumer magazine evaluated the price and performance of 23 models of cordless phones. Computer output gives these summaries for the prices ($): -The IQR for these data is