Exam 1: Introduction and Data Collection

Most analysts focus on the cost of HECS fees as the way to measure the cost of a university education.But incidentals,such as textbook costs,are rarely considered.A researcher at the University of Adelaide wishes to estimate the textbook costs of first-year students at the University.To do so,she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $300 per semester.Identify the sample in the study.

Marital status is an example of a numerical variable.

A marketing research analyst needs to assess the effectiveness of a new television advertisement.To collect appropriate data,she has provided a questionnaire instrument that can be answered electronically.Which of the 4 methods of data collection is she using?

A personal computer user survey was conducted.The number of computer magazine subscriptions is an example of a ________ numerical variable.

Problems may arise when statistically unsophisticated users who do not understand the assumptions behind the statistical procedures or their limitations are misled by results obtained from computer software.

The collection and summarisation of the socioeconomic and physical characteristics of the employees of a particular firm is an example of

Which of the following is NOT an element of descriptive statistical problems?

The average salary of a University lecturer in Australian dollars is an example of

A potential investor wants to determine which firms within which industries are likely to have experienced growth in a period of economic recovery.He accessed information from an Internet Site to capture the average performance figures of firms from various industries.Which of the four Methods of data collection was he using?

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.Using the information obtained from the sample to predict population characteristics with respect to malpractice litigation is an example of ________.

The rankings of teams in a rugby tournament is an example of

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.

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

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.Information obtained from the sample will be used to draw conclusions about the true population ________.

Which of the following is most likely a population as opposed to a sample?

A study attempted to estimate the proportion of Queensland residents who were willing to spend more tax dollars on protecting the beaches from environmental disasters.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 universe or "totality of items or things" under consideration is called

Most universities admit students based on their achievements in a number of different areas.The grade obtained in English in their final year of high school (A,B,C,D,or F)is an example of a ________ variable.

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 500 employees who will participate in this study constitute the ________.

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.