Population Sample Parameter Statistic Sampling Methods

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• Self - selected (volunteer)

Units of the population are ordered in some fashion.  Usually, every k-th unit is chosen.

• stratified

• quota

• simple random

• systematic

Identify the sampling method:

A community college student interviews the first 100 students to enter the building to determine the percentage of students that own a car.

• Quota

• Stratified

• Cluster

• Convenience

Explain the difference between a population parameter and a sample statistic.

• Population parameter is for a subset of the population, sample statistic is for the entire population.

• Population parameter is always accurate, sample statistic is always an estimate.

• Population parameter is calculated from a sample, sample statistic is calculated from the entire population.

• Population parameter is for the entire population, sample statistic is for a subset of the population.

A ​ ​ (a)   is a representative portion of the population from which information is gathered.

• sample

• statistics

• parameter

• population

What type of sampling is shown?

• Simple Random Sample

• Systematic Sample

• Cluster Sample

• Stratified Sample

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

• The Population

• The Sample

• The Sampling Distribution

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 1003 Mercy County voters is asked if they would vote for the incumbent governor. The percent of voters responding "yes" is calculated. What is the population parameter?

• percentage of 1003 voters that would vote yes for the incumbent governor

• percentage of all voters in Mercy County that would vote yes for the incumbent governor

• percentage of all voters that voted yes for the mayor

• percentage of all voters that voted yes in the last election

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