Exam 2: Graphical Summaries of Data

The following table presents the rate of population growth of a suburb of Atlanta, Georgia for each of the years 1990 through 2009. Construct a time-series plot of the growth rate. Year Percent Growth Year Percent Growth 1990 3.1 2000 5.5 1991 3.3 2001 5.2 1992 4.3 2002 4.4 1993 3.5 2003 4.2 1994 4.4 2004 4.1 1995 5.7 2005 4.7 1996 5.2 2006 5.9 1997 6.4 2007 6.2 1998 5.6 2008 5.2 1999 5.8 2009 4.6

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic. Weights of Clinic Visitors Weight (lb) Frequency 100-109 1 110-119 1 120-129 5 130-139 4 140-149 7 150-159 4 160-169 10 170-179 8 180-189 5 190-199 5 Construct a frequency histogram.

A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 76 4.0-7.9 57 8.0-11.9 32 12.0-15.9 18 16.0-19.9 13 20.0-23.9 4 Construct a relative frequency ogive for the frequency distribution.

A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 74 4.0-7.9 57 8.0-11.9 35 12.0-15.9 18 16.0-19.9 12 20.0-23.9 4 Construct a relative frequency polygon for the frequency distribution.

Classify the histogram as skewed to the left, skewed to the right, or approximately symmetric.

The following bar graph presents the average amount a certain family spent, in dollars, on various food categories in a recent year. On which food category was the most money spent?

The following frequency distribution presents the frequency of passenger vehicles that pass through a certain intersection from 8:00 AM to 9:00 AM on a particular day. SUV 70 Truck 35 Construct a frequency bar graph for the data.

Construct a dotplot for the following data. 16 13 14 12 15 13 14 14 12 12 14 13 13 14 12 13 15 14 12 16

The amounts 5 and 2 are compared. Which of the following graphical displays are the least misleading?

Gravity on Mars: The gravity on Earth is around 2/3 's stronger than the gravity on Mars. Which of the following graphics compare the gravity differences more accurately, and why?

The following time-series plot presents the population growth (in percent) of a suburb of Atlanta, Georgia for each of the years 1990 through 2009. Estimate the rate of growth in 1,999.

The amounts 3 and 2 are compared. Which of the following graphical displays are the least misleading?

Thirty households were surveyed for the number of televisions in each home. Following are the results. 0 0 0 0 1 1 0 4 2 5 0 2 1 0 2 4 0 0 0 1 0 1 1 5 3 0 4 1 3 0 Construct a relative frequency histogram.

The following frequency distribution presents the frequency of passenger vehicles that pass through a certain intersection from 8:00 AM to 9:00 AM on a particular day. Vehicle Type Frequency Motorcycle 7 Sedan 22 SUV 58 Truck 67 Construct a relative frequency Pareto chart for the data.

A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watehing Television Number of hours Frequency 0.0-3.9 38 4.0-7.9 38 8.0-11.9 34 12.0-15.9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20 Construct a frequency ogive for the frequency distribution.

Construct a stem-and-leaf plot for the following data, in which the leaf represents the tenths place. 6.7 8.3 10.3 9.0 10.3 8.8 9.1 6.9 10.8 6.6 10.3 10.7 10.3 3.8 10.6 5.0 5.3 8.1 9.1 9.6 10.9 7.8 8.8 9.8

Toy sales: The following graph presents the percent market share for the US Toy Retail Sales between brick and mortar toy sales and online sales for the years 2011-2015. Does the graph present an accurate picture of the differences in revenue from these two sources? Or is it misleading? Explain.

A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 49 4.0-7.9 36 8.0-11.9 31 12.0-15.9 29 16.0-19.9 19 20.0-23.9 15 24.0-27.9 21 Construct a frequency polygon for the frequency distribution.

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic. Weight (lb) Frequency 100-103 2 104-107 1 108-111 4 112-115 4 116-119 10 120-123 9 124-127 4 128-131 1 What is the class width?

The following pie chart presents the percentages of fish caught in each of four ratings categories. Match this pie chart with its corresponding bar graph.