Exam 2: Data Collection

A cluster sample is a type of stratified sample that is based on geographical location.

Running times for 500 runners in a 5k race would be a univariate data set.

Telephone surveys often have a low response rate and fail to reach the desired population.

Which variable is least likely to be regarded as ratio data?

Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing every 15^th folder. Which sampling method is this?

A sampling technique used when groups are defined by their geographical location is:

When we are choosing a random sample and we do not place chosen units back into the population, we are:

Professor Hardtack chose a sample of 7 students from his statistics class of 35 students by picking every student who was wearing red that day. Which kind of sample is this?

By taking a systematic sample, in which we select every 50^th shopper arriving at a specific store, we are approximating a random sample of shoppers.

The number of passengers "bumped" on a particular airline flight is ____________ data.

Before deciding whether to assess heavy fines against noisy airlines, which sampling method would the Federal Aviation Administration probably use to measure the peak noise from departing jets as measured by a ground-level observer at a point one mile from the end of the departure runway?

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree" is intended to prevent "neutral" choices.

An advantage of convenience samples over random samples is that:

An advantage of a systematic sample is that no list of enumerated data items is required.

Private statistical databases (e.g., CRSP) are usually free.

A binary variable (also called a dichotomous variable or dummy variable) has:

From its 32 regions, the FAA selects 6 regions, and then randomly audits 25 departing commercial flights in each region for compliance with legal fuel and weight requirements. This is an example of:

In last year's annual report, Thompson Distributors indicated that it had 12 regional warehouses. This is an example of ordinal level data.

A sampling frame is used to identify the target population in a statistical study.

Different variables are usually shown as columns of a multivariate data set.