Population Sample Parameter Statistic Practice

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

• Statistics

• Number

• People

• Population

• Pueblo

Population or Sample?

A survey of 1353 American households found that 18% of the households own a computer.

• Population

• Sample

The average weight of every person entering the mall within 3 hour period was 146 lb.

• Population

• Sample

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

At a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?

•  78% is a population and 72% is a sample.

• 72% is a population and 78% is a sample

• 78% is a parameter and 72% is a statistic

• 72% is a parameter and 78% is a statistic

What is the population parameter of interest, and what is the correct notation for this parameter?

• phat =proportion of U.S. adults who are dissatisfied with the quality of education students receive in kindergarten through grade 12

• p = proportion of U.S. adults who are dissatisfied with the quality of education students receive in kindergarten through grade 12

• phat proportion of the sample of 1,012 randomly selected U.S. adults who are dissatisfied = 0.53

• proportion of the sample of 1,012 randomly selected U.S. adults who are dissatisfied = 0.53

A characteristic in a population is called a ________, whereas a characteristic in a sample is called a ________.

• population parameter; sample statistic

• sample statistic; population parameter

• sample parameter; population statistic

• population statistic; sample parameter

A random sample of 1000 college students in the United States is surveyed about how much money they spend on books per year, the mean amount is calculated. What is the sample statistic?

• mean amount spent on textbooks

• mean amount spent on textbooks by 1000 college students

• mean amount spent on college by 1000 college students

• amount spent on textbooks by 1000 college students

What does this symbol represent?

• parameter

• sample proportion

• parameter of a population

• population proportion

These symbols represent the mean and standard deviation for which of the following distributions?

• The Population

• The Sample

• The Sampling Distribution