Elementary Statistics Questions and Answers 100% Correct

Identify whether the statement describes inferential statistics or descriptive statistics. There is a relationship between smoking cigarettes and getting emphysema. - ANSWER-inferential statistics From past figures, it is predicted that 19% of the registered voters in California will vote in the June primary. - ANSWER-descriptive statistics Determine whether the data are qualitative or quantitative. the number of seats in a movie theater - ANSWER-quantitative Identify the data set's level of measurement. hair color of women on a high school tennis team - ANSWER-nominal Identify the data set's level of measurement. number of milligrams of tar in 85 cigarettes - ANSWER-ratio Identify the data set's level of measurement. the ratings of a movie ranging from "poor" to "good" to "excellent" - ANSWER-ordinal Identify the data set's level of measurement. the final grades (A, B, C, D, and F) for students in a statistics class - ANSWER-ordinal Identify the data set's level of measurement. the nationalities listed in a recent survey (for example, Asian, European, or Hispanic). - ANSWER-nominal Identify the data set's level of measurement. manuscripts rated "acceptable" or "unacceptable" - ANSWER-ordinal Identify the data set's level of measurement. the lengths (in minutes) of the top ten movies with respect to ticket sales in 2007 - ANSWER-ratio Decide which method of data collection you would use to collect data for the study. Specify either observational study, experiment, simulation, or survey. A study where a drug was given to 23 patients and a placebo to another group of 23 patients to determine if the drug has an effect on a patient's illness - ANSWER-experiment Decide which method of data collection you would use to collect data for the study. Specify either observational study, experiment, simulation, or survey. A study where you would like to determine the chance getting three girls in a family of three children - ANSWER-simulation Identify the sampling technique used. Every fifth person boarding a plane is searched thoroughly. - ANSWER-systematic Identify the sampling technique used. A researcher for an airline interviews all of the passengers on five randomly selected flights. - ANSWER-cluster Identify the sampling technique used. A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these numbers. - ANSWER-random Identify the sampling technique used. A market researcher randomly selects 200 drivers under 55 years of age and 200 drivers over 55 years of age. - ANSWER-stratified Identify the sampling technique used. A researcher randomly selected 25 of the nation's middle schools and interviewed all of the teachers at each school. - ANSWER-cluster Solve the problem. The average age of the students in a statistics class is 22 years. Does this statement describe: - ANSWER-descriptive statistics? Solve the problem.