Exam 1: Basic Ideas

By visiting homes door-to-door, a municipality surveys all the households in 149 randomly-selected neighborhoods to see how residents feel about a proposed property tax increase. Identify the type of Sample that is being used.

When experimental units are people, they are sometimes called ________________.

You ask your friends who they plan to vote for in the next congressional election. Based on their responses, you conclude that the candidate you favor cannot lose! This is most likely an example of ...

In an experiment, the ______________ is what is measured on each experimental unit.

A(n) _______________ makes it difficult to determine whether an experimental outcome is due to the applied treatment.

When rolling two six-sided dice, your total roll ranges from 2 (double ones) to 12 (double sixes).Characterize the nature of the roll total.

Which of the following is the best description of a randomized experiment?

A pollster randomly samples 145 Democrats, 154 Republicans and 19 Independents (all registered voters) in Metro City and asks each poll participant which mayoral candidate he or she prefers. Identify the kind of sample that the pollster is using.

Which one of the following data are discrete?

Which one of the following data are discrete?

Determine which of the following describes qualitative data. i. the volume of a shipping container, in gallons ii. the name of the material from which the container is made iii. the shape of the container

People are reluctant to admit to behavior that may reflect negatively on them. This can lead to ...

Determine which of the following describes ordinal data. i. In the horse race, Betty's Girl won, Mr. Ed placed, and Wabash showed. ii. In the horse race, I bet on Betty's Girl to win, Mr. Ed to place, and Wabash to show.

In an experiment, subjects are put into two categories according to sex, and then each subject is randomly assigned a treatment . This is an example of...

Determine which of the following describes ordinal data. i. My best friends are Georgia, Amithaba, and Raphael. ii. My favorite numbers are 2, 7 and 13.

Choose the answer below that best completes the following statement. A _____________ is a number that describes a sample.

Determine which of the following describes qualitative data. i. the make of the car with license plate number VNS-862 ii. the license plate number VNS-862 iii. the number of vehicles whose license plate number begins with "VNS"

In a survey of 1000 teenagers, 23% of them said they use tobacco products. Is this an example of statistic or a parameter?

Which one of the following data are continuous?

Of the televisions offered at an electronics store, 42% cost less than $500.00. Is this an example of statistic or a parameter?