STATS 2.3
(a) Estimate the unemployment rate in year 5. (b) In what year was the unemployment rate highest? (c) In what year was the inflation rate highest? (d) In what year were the unemployment rate and inflation rate closest? furthest? (e) The misery index is defined as the sum of the unemployment rate and the inflation rate. According to the misery index, which year was more "miserable," year 17 or year 19? (f) Comment on the trend in the misery index between year 12 and year 16.
8.0 16 17 9, 15 The misery index for year 17 was approximately 12% and for year 19 approximately 9.8%, so year 17 was more "miserable." The misery index is increasing from year 12 to year 16.
Determine whether there have been any years when the debt decreased (since 2000). Select the correct choice below and, if necessary, fill in the answer boxes within your choice.
No, the debt exclusively increased over all the years.
The following data represent the total federal debt (in trillions of dollars) of the United States from 2000 to 2018. Complete parts (a) and (b) below.
(a) Construct a time-series plot of the data. Choose the correct answer below. C (b) Percentage change may be found using the formula: Percentage change =P 2 - P 1 / P 1 EndFractionP2−P1P1. What was the percent change in debt from 2010 to 2011? Have there been any years when the debt decreased (since 2000)? 14.8- 13.6/13.6 =86.76% 86.8 = 8.8%
The accompanying data represent health care expenditures per capita (per person) as a percentage of the U.S. gross domestic product (GDP) from 2010 to 2016. Gross domestic product is the total value of all goods and services created during the course of the year. Complete parts (a) through (c) below.
(a) Construct a time-series plot that a politician would create to support the position that health care expenditures are increasing and must be slowed. Choose the correct graph below. C (b) Construct a time-series plot that the health care industry would create to refute the opinion of the politician. Choose the correct graph below. D (c) Explain how different measures may be used to support two completely different positions. Choose the correct answer below. The scales used in the graph can significantly affect the message. Also, the variable used to convey the message on the graph can make a large difference as well.
The accompanying relative frequency ogive represents the composite score on a standardized test for a high school graduating class. Complete parts (a) through (d) below.
(a) What is the class width? 4 (b) Approximately 15% of students had a composite score below what level? 16 (c) What percentage of students had a composite score less than 24? 85% (d) Ten percent of students had a composite score above what level? 28%
The accompanying frequency polygon represents the number of a country's residents below 100 years of age. Complete parts (a) through (f) below.
(a) What is the class width? How many classes are represented in the graph? 10, 10 (b) What is the midpoint of the second class? What are the lower and upper limits of the second class? Assume the lower and upper class limits are whole numbers. 15, 10-19, (c) What is the midpoint of the next to lastnext to last class? What are the lower and upper limits of the next to lastnext to last class? Assume the lower and upper class limits are whole numbers. 85, 80-89 (d) Which age group has the highest population? 30-39 (e) Which age group has the lowest population? 90-99 (f) Which age group has 40million? 40-49
The following newspaper type graphic illustrates the ideal family size (total children) based on a survey of adults from a certain country. Complete parts (a) through (c) below. (a) What type of graphic is being displayed? (b) Describe any problems with the graphic. Select all that apply.
a. Bar Graph b. A c. A
What is an ogive?
a graph that represents the cumulative frequency or cumulative relative frequency for the class
A.) it doesnt take into account the size of the population in each region The graph to the right represents the favorite colors of 28 children. Why is the graph misleading? (b) What could be done to improve the graphic?
a.) he graph is not misleading. b.) The graph does not need to be changed.
The table below gives the number of elementary school children in 16 school districts in a particular region.
(a) Complete the cumulative frequency distribution. 2, 4, 10, 16 (b) Construct a cumulative relative frequency distribution. 0.1250.250,0.625,1.000 (c) Draw a frequency polygon. A (d) Draw a relative frequency ogive. D
The following graph shows the median income for females from 2011 to 2015. Complete parts (a) and (b) below.
(a) How is the bar graph misleading? What does the graph seem to convey? Choose the correct answer below. The vertical axis starts at 34,000 instead of 0. This tends to indicate that the median income for females changed at a faster rate than it actually did. (b) Redraw the graph so that it is not misleading. What does the new graph seem to convey? C What does the new graph seem to convey? Choose the correct answer below. This graph indicates that median income for females have remained fairly constant over the given time period.
