Statistic or Parameter
In a survey conducted in the town of Atherton, 22% of adult respondents reported that they had been involved in at least one car accident in the past 10 years.
What is a statistic?
The colors of books covers on a bookshelf.
What is a qualitative variable?
The number of pills in an aspirin bottle.
What is a discrete variable?
A poll is conducted in which professional musicians are asked their ages.
What is an observational study?
A survey of 1538 American households found that 30%own a DVD recorder. Identify the population.
What is American householders?
23.2% of the mayors of cities in a certain state are from minority groups.
What is a parameter?
The number of phone calls received at a company's help desk.
What is a quantitative variable?
The age of the oldest employee in the data processing department.
What is a discrete variable?
Several dogs are fed with different types of dog food to determine if they lose weight within 6 months. Some dogs will exercise, some won't.
What is a designed experiment?
A survey of 1538 American households found that 30% own a DVD recorder. Identify the sample.
What is the collection of 1538 American households?
A study of 2,300 college students in the city of Pemblington found that 11% had been victims of violent crimes
What is a statistic?
The number of seats in a school auditorium.
What is a quantitative variable?
The speed of a car on a Boston tollway during rush hour traffic.
What is a continuous variable?
Two groups of students will prepare for a math test. One group will listen to randomly selected music and the second group will study quietly. We want to determine what group does better in the test.
What is a designed experiment?
Independent variable that can be observed/modified and explains certain experiment/study?
What is an explanatory variable?
51.6% of the residents of Idlington Garden City are female.
What is a parameter?
The number on the shirts of a boy's football team.
What is a qualitative variable?
The cholesterol levels of a group of adults the day after Thanksgiving.
What is a continuous variable?
A pollster obtains a sample of students and asks them how they will vote on an upcoming referendum.
What is an observational study?
Is the name of the variable that changes depending on how the explanatory variable changes.
What is the response variable?
The average age of 65 students in Ms. Hope's political science class is 21 years, 11 months.
What is a parameter?
The bank account numbers of the students in a class.
What is a qualitative variable?
The number of goals scored in a hockey game.
What is a discrete variable?
100 smokers and 100 nonsmokers are chosen randomly. After a survey, the researcher compares the depression rates in both groups to determine if smokers tend to be more depressed than nonsmokers.
Is an explanatory variable that is not considered in a study but affects the response variable.
What is a lurking variable?