Exam 3: Descriptive Statistics II: Additional Descriptive Measures and Data Displays

The data below indicate the number of "green" homes built in 10 selected metropolitan areas during the past year.Determine the median number of green homes built in the sampled areas.

The data below indicate the number of "green" homes built in 10 selected metropolitan areas during the past year.Determine the 75^th percentile value for the data.

Player payrolls for the top 20 teams in professional baseball are shown in the table below.Identify the 1st quartile value.

In a test of RiteAid.com's new website, search times for 20 trial orders were recorded, in minutes.Results are reported in the table: Construct a STRETCHED (and ordered) stem-and-leaf diagram for the data.One of the rows in the table would look like:

Below is a list of the total attendance at the Portland Oaks 25 home basketball games this season.Determine the 60th percentile value. 194, 198, 223, 211, 230, 221, 190, 185, 234, 210,189, 193, 198, 178, 209, 231, 186, 203, 182, 193, 201, 242, 216, 177, 204

Which of the following best describes the coefficient of variation?

The heights in inches of the 14 players listed on the Chicago Bulls roster for the 2013-14 season are shown below (NBA.com).Determine the median value. 81, 79, 77, 81, 81, 81, 76, 82, 82, 83, 82, 75, 79, 74.

The data below show the number of new jobs created in Georgia's 20 most populous counties during the past month. Create a stem-and-leaf diagram to display the data using two leading digits to form the stem.Use a "leaf unit" of 10 so that you can construct the diagram using only one-digit leaves.Make your diagram an "ordered" stem-and-leaf diagram by putting the leaf values in ascending order.In your diagram, the row in which "1" and "8" are the 2 leading digits should look like:

Area car sales and home sales are listed for four sample months.Compute the covariance.Remember to treat the data as a sample.

The heights in inches of the 14 players listed on the Chicago Bulls roster for the 2013-14 season are shown below (NBA.com).Determine the 25^th percentile value. 81, 79, 77, 81, 81, 81, 76, 82, 82, 83, 82, 75, 79, 74.

Which of the following denotes the number of standard deviations a data value is from the mean?

In a sample of five trading days, the number of shares traded (in 1000s) for two particular stocks appears in the table.Compute the sample covariance for temperature and crime rate.

The ____________ measures variation as a percentage of the mean.

Which of the following statements is TRUE concerning the correlation coefficient?

The list below shows the number of orders processed by Grant and Traynor over the past 16 weeks. Use the method described in the chapter to identify the value of the 30th percentile, then compare the % of the values in the data set that are ACTUALLY at or below the 30th percentile value you had determined.

The interquartile range is the difference between the third quartile and the first quartile values in the data set.

The table below shows the advertising expenditures in $millions for the nine largest tech companies during the past year.Determine the median advertising expenditure.

The table summarizes the mean and the standard deviation of the supplier cost per liter of natural gas sold in four countries over the last 20 months.Using the coefficient of variation to measure cost volatility, rank order the countries from highest to lowest volatility.

The table below shows the civilian unemployment rate (%) and the growth rate of GDP (%) in the United States from 2009 to 2012 (Economic Report of the President).Treating the data as a sample, compute the correlation coefficient of the two sets of values.

Here is a 5-number summary of per-capita income in the 28 member nations of the European Union.Data are in international dollars. Min: $12,808 Q1: $18,947 Median: $27,693 Q3: $37,770 Max: $79,785 Which of the following statements describes the appropriate box-and-whisker plot for this data?