Exam 1: Introduction and Data Collection

The answer to the question "How do you rate the quality of your business statistics course?" is an example of an ordinal scaled variable.

One of the "big four" Australian banks is conducting research in order to understand the banking needs of Australian residents.Another option is to collect data using focus groups which is an example of ________ research.

In purchasing a motor vehicle,there are a number of variables to consider.The classification of the car as a subcompact,compact,standard,or luxury size is an example of a ________ variable.

The quality ("terrible","poor","fair","acceptable","very good" and "excellent")of a day care centre is an example of a numerical variable.

A study is under way in the Otway National Park to determine the mature height of Mountain Ash gum trees.Specifically,the study is attempting to determine what factors aid a tree in reaching heights greater than 60 metres tall.It is estimated that the park contains 25,000 mature Mountain Ash gum trees.The study involves collecting heights from 250 randomly selected mature Mountain Ash gum trees and analysing the results.Identify the variable of interest in the study.

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 DVD recorder 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 "How many DVD players made by other manufacturers have you used?" are values from a

The type of TV one owns is an example of an ordinal scaled variable.

Which of the following is most likely a parameter as opposed to a statistic?

The amount of kilojoules contained in a 250 gram packet of cheese will be measured on a ratio scale.

To monitor campus security,the campus security office is taking a survey of the number of students in a parking lot each 30 minutes of a 24-hour period with the goal of determining when patrols of the lot would serve the most students.If X is the number of students in the lot each period of time,then X is an example of

The portion of the universe that has been selected for analysis is called

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.All the employees in the corporation constitute the ________.

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 DVD recorder made by the company over the past 12 months are satisfied with their products. -Referring to Instruction 1-1,the population of interest is

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.The Director will use the data from the sample to compute ________.

The amount of time a student spent studying for an exam will be measured on a ratio scale.

The amount of coffee consumed by an individual in a day is an example of a discrete numerical variable.

The Department of Health in Western Australia wanted to study malpractice litigation in Western Australia.A sample of 31,000 medical records was drawn from a population of 850,000 patients who were discharged during the year 2011.The proportion of malpractice claims filed from the sample of 31,000 patients is a ________.

A personal computer user survey was conducted.The number of years using a personal computer is an example of a ________ numerical 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.

Researchers are concerned that the weight of the average Australian school student is increasing implying,among other things,that children's clothing should be manufactured and marketed in larger sizes.If X is the weight of school children sampled in a nationwide study,then X is an example of