Exam 1: Defining and Collecting Data

The possible responses to the question 'How many times in the past year have you visited a public library?' are values from a discrete variable.

The opinions of preselected experts are sought in a non-probability sample.

A numerical measure that is computed to describe a characteristic from only a sample of the population is called

The Dean of Students conducted a survey on campus.Grade point average (GPA)is an example of a _________ numerical variable.

Student grades (A to D)are an example of continuous numerical data.

A professor computing the sample average exam score of 20 students and using it to estimate the average exam score for the 1,500 students taking the exam is an example of inferential statistics.

A study attempted to estimate the proportion of Queensland residents who were willing to spend more tax dollars on solar-powered lighting for streets and public parks.Twenty-five hundred Queensland residents were surveyed.What type of data collection procedure was most likely used to collect the data for this study?

The grade level (1-12)of a student is an example of a numerical variable.

The Talent Retention Officer of a large corporation wishes to develop employee newly expanded 'soft' benefits package for employee retention and recruitment purposes,and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for possible perks to be included in the potential package.In this study,methods involving the collection,presentation,and characterisation of the data are called _________.

The Vice Chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited the campus bar on the weekend before the final exam period.Her advisor took a random sample of 250 students and computed the portion of students in the sample who visited the campus bar on the weekend before the final exam.The portion of all students at her university who visited the campus bar on the weekend before the final exam period is an example of

A personal computer user survey was conducted.The primary word processing package used is an example of a _________variable.

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.The number of claims a person has made in the last 3 years is an example of a _________variable.

A telecommunications provider conducted a survey on mobile phone usage in Australia.The number of mobile phones owned per household is an example of a _________ numerical variable.

Which of the four methods of data collection is involved when a person counts the number of joggers running by designated locations in Melbourne's Princes Park?

In purchasing a motor vehicle,there are a number of variables to consider.The body style of the car (sedan,coupe,wagon,etc.)is an example of a _________ variable.

The average number of units passed per semester by university students is suspected to be rising.A researcher at Brisbane University wishes to estimate the number of units passed by students during the second semester at Brisbane University.To do so,he randomly selects 100 student transcripts and records the number of units each student passed in second semester.Identify the variable of interest to the researcher.

A personal computer user survey was conducted.The hours of personal computer use per week is an example of a _________ numerical variable.

Instruction 1.1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a wireless home security system made by the company over the past 12 months are satisfied with their products. -Referring to Instruction 1.1,the possible responses to the question 'Out of a 7 point scale with 7 being "extremely satisfied" and 1 being "extremely unsatisfied",what is your satisfaction level on the wireless home security system that you purchased?' are values from a

The Talent Retention Officer of a large corporation wishes to develop employee newly expanded 'soft' benefits package for employee retention and recruitment purposes,and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for possible perks to be included in the potential package.All the employees in the corporation constitute the _________.

Marital status is an example of a numerical variable.