Chapter 1 Review Explain the difference between a population and a sample.

Chapter 1 Review Explain the term “descriptive statistics.”

Chapter 1 Review Explain the term “inferential statistics.”

Chapter 1 Review ____________ are the characteristics of the individuals of the population being studied.

Chapter 1 Review Contrast the differences between qualitative and quantitative variables.

Chapter 1 Review Discuss the differences between discrete and continuous variables.

Chapter 1 Review In your own words, define the four levels of measurement of a variable. Give an example of each.

Chapter 1 Review The age of a person is commonly considered to be a continuous random variable. Could it be considered a discrete random variable instead? Explain.

Quantitative or Qualitative Phone number Qualitative

Quantitative or Qualitative Assessed value of a house Quantitative

Quantitative or Qualitative Number of unpopped kernels in a bag of ACT microwave popcorn Quantitative

Quantitative or Qualitative Number of days during the past week that a college student aged 21 years or older has had at least one drink Quantitative

Quantitative or Qualitative Number on a football player’s jersey Qualitative

Quantitative or Qualitative Temperature Quantitative

Quantitative or Qualitative Grams of carbohydrates in a doughnut Quantitative

Quantitative or Qualitative Gender Qualitative

Quantitative or Qualitative Nation of origin Qualitative

Quantitative or Qualitative Zip code Qualitative

Quantitative or Qualitative Number of siblings Quantitative

Discrete or Continuous Air pressure in pounds per square inch in an automobile tire Continuous

Discrete or Continuous Points scored in an NCAA basketball game Discrete

Discrete or Continuous Internet connection speed in kilobytes per second Continuous

Discrete or Continuous The distance a 2007 Toyota Prius can travel in city driving conditions with a full tank of gas Continuous

Discrete or Continuous Temperature on a randomly selected day in Memphis, Tennessee Continuous

Discrete or Continuous Number of sequoia trees in a randomly selected acre of Yosemite National Park Discrete

Discrete or Continuous Length of a country song Continuous

Discrete or Continuous The number of cars that arrive at a McDonald’s drive-through between 12:00 PM and 1:00 PM Discrete

Discrete or Continuous Volume of water lost each day through a leaky faucet Continuous

Discrete or Continuous Runs scored in a season by Babe Ruth Discrete

Discrete or Continuous The number of heads obtained after flipping a coin five times Discrete

Level of Measurement Nation of origin Nominal

Level of Measurement Gender Nominal

Level of Measurement Movie ratings of one star through five stars Ordinal

Level of Measurement Volume of water used by a household in a day Ratio

Level of Measurement Temperature Interval

Level of Measurement Year of birth of college students Interval

Level of Measurement Highest degree attained (high school, bachelor’s, etc) Ordinal

Level of Measurement Number of days during the past week that a college student aged 21 years or older has had at least one drink Ratio

Level of Measurement Eye color Nominal

Level of Measurement Letter grade earned in your statistics class Ordinal

Level of Measurement Assessed value of a house Ratio

Level of Measurement Time of day measured in military time Interval

Random, Cluster, Systematic, Stratified, Convenience A __________ is obtained by dividing the population into groups and selecting all individuals from within a random sample of the groups. Cluster

Random, Cluster, Systematic, Stratified, Convenience A _________ is obtained by dividing the population into groups of the same kind and randomly selecting individuals from each group. Stratified

Random, Cluster, Systematic, Stratified, Convenience To estimate the percentage of defects in a recent manufacturing batch, a quality-control manager at Intel selects every 8th chip that comes off the assembly line starting with the 3rd until she obtains a sample of 140 chips. Systematic

Random, Cluster, Systematic, Stratified, Convenience To determine the prevalence of human growth hormone (HGH) use among high school varsity baseball players, the State Athletic Commission randomly selects 50 high schools. All members of the selected high schools’ varsity baseball teams are tested for HGH. Cluster

Random, Cluster, Systematic, Stratified, Convenience To determine customer opinion of its boarding policy, Southwest Airlines randomly selects 60 flights during a certain week and surveys all passengers on the flights. Cluster

Random, Cluster, Systematic, Stratified, Convenience A member of Congress wishes to determine her constituency’s opinion regarding estate taxes. She divides her constituency into three income classes: low-income households, middle-income households, and upper- income households. She then takes a simple random sample of households from each income class. Stratified

Random, Cluster, Systematic, Stratified, Convenience In an effort to identify if an advertising campaign has been effective, a marketing firm conducts a nationwide poll by randomly selecting individuals from a list of known users of the product. Random

Random, Cluster, Systematic, Stratified, Convenience A radio station asks its listeners to call in their opinion regarding the use of U.S. forces in peacekeeping missions. Convenience

Random, Cluster, Systematic, Stratified, Convenience A farmer divides his orchard into 50 subsections, randomly selects 4, and samples all the trees within the 4 subsections to approximate the yield of his orchard. Cluster

Random, Cluster, Systematic, Stratified, Convenience A school official divides the student population into five classes: freshman, sophomore, junior, senior, and graduate student. The official takes a simple random sample from each class and asks the members’ opinions regarding the student services. Stratified

Random, Cluster, Systematic, Stratified, Convenience A survey regarding download time on a certain website is administered on the Internet by a market research firm to anyone who would like to take it. Convenience

Random, Cluster, Systematic, Stratified, Convenience The presider of a guest-lecture series at a university stands outside the auditorium before a lecture begins and hands every fifth person who arrives, beginning with the third, a speaker evaluation survey to be completed and turned in at the end of the program. Systematic

Random, Cluster, Systematic, Stratified, Convenience To determine his DSL Internet connection speed, Shawn divides up the day into four parts: morning, midday, evening, and late night. He then measures his Internet connection speed at 5 randomly selected times during each part of the day. Stratified

Random, Cluster, Systematic, Stratified, Convenience 24 Hour Fitness wants to administer a satisfaction survey to its current members. Using its membership roster, the club selects 40 club members names out of a hat and asks them about their level of satisfaction with the club. Random