Exam 25: Exploring and Collecting Data

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 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 who cited Greater Selection as the primary reason they shop online were females?

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 this summary for the prices ($): -Based on the summary statistics, which of the following is true?

Use the following to answer the question(s) below. A manager of Kim & Lim corporate strategy department thinks that dollars spent on advertising can to some extent be a predictor of total sales dollars. As an aid in long-term planning, she analyzes the following sales and advertising numbers for 2015 (both in $millions). Information was collected from eight companies of Kim & Lim. -The sum of the cross-product of the deviations is found as follows: What is the coefficient of the correlation between x (Advertising) and y (Sales)?

Which is true for the data shown in the histogram?

Use the following to answer the question(s) below. Below is Excel output showing the coefficient of correlation between personal income and vacation expenses (both in $thousands) for a large sample of clients of one travel agency in Toronto. -Which of the following statements are false?

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 manager of Kim & Lim corporate strategy department thinks that dollars spent on advertising can to some extent be a predictor of total sales dollars. As an aid in long-term planning, she analyzes the following sales and advertising numbers for 2015 (both in $millions). Information was collected from eight companies of Kim & Lim. -What type of variable is category of workplace injuries (slip and fall, stress related, etc.)?

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?

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

Use the following to answer the question(s) below. A manager of Kim & Lim corporate strategy department thinks that dollars spent on advertising can to some extent be a predictor of total sales dollars. As an aid in long-term planning, she analyzes the following sales and advertising numbers for 2015 (both in $millions). Information was collected from eight companies of Kim & Lim. -Statscan compiles data on a number of variables. Which of the following Statscan variables is categorical?

A researcher is conducting a study on Internet use. He decides to first categorize the population by education level (high school, college graduate, advanced degree, etc.) and then survey a select number from each category. This sampling strategy is called