Questions from Statistics Principles

Q: A car salesman records the number of cars he sold each week

A car salesman records the number of cars he sold each week for the past year. The following frequency histogram shows the results. (a) What is the most frequent number of cars sold in a week? (b) For...

Q: The following frequency histogram represents the IQ scores of a random sample

The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each...

Q: Movie ratings of one star through five stars

Movie ratings of one star through five stars

Q: The frequency histogram represents the number of alcohol-related traffic fatalities

The frequency histogram represents the number of alcohol-related traffic fatalities by state (including Washington, D.C.) in 2016 according to the National Highway Traffic Safety Administration. (...

Q: (a) Annual household incomes in the United States (

(a) Annual household incomes in the United States (b) Scores on a standardized exam such as the SAT (c) Number of people living in a household (d) Ages of patients diagnosed with Alzheimer’s disease

Q: (a) Number of alcoholic drinks consumed per week (

(a) Number of alcoholic drinks consumed per week (b) Ages of students in a public school district (c) Ages of hearing-aid patients (d) Heights of full-grown men

Q: A student conducted a survey asking a random sample of adults,

A student conducted a survey asking a random sample of adults, “How many days per week do you exercise?”. The results of the survey are displayed in the dot plot drawn in StatCrunch shown below. (a) W...

Q: The following dot plot drawn in Minitab shows the number of people

The following dot plot drawn in Minitab shows the number of people living in a household for a random sample of households in the United States. (a) If you randomly selected a household, what is the m...

Q: The following time-series plot shows the annual unemployment and inflation

The following time-series plot shows the annual unemployment and inflation rates for the years 2001 through 2017. Source: www.miseryindex.us (a) Estimate the unemployment rate in 2012. (b) In what yea...

Q: The following time-series plot shows the average age at which

The following time-series plot shows the average age at which individuals first marry by gender for each year of the census since 1890. (a) To the nearest year, what was the average age of a man who f...