Exam 1: Defining and Collecting Data

Selecting items based only on the fact that they are easy or inexpensive occurs in _________ sampling.

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

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 variable of interest to the researcher.

Most universities admit students based on their achievements in a number of different areas.The total university entrance score achieved by a student is an example of a_________numerical variable.

When collecting data to manage a business effectively,the most common technique to ensure proper representation is to use a _________.

The Quality Assurance Department of a large urban hospital is attempting to monitor and evaluate patient satisfaction with hospital services.Prior to discharge,a random sample of patients is asked to fill out a questionnaire to rate such services as medical care,nursing,therapy,laboratory,food,and cleaning.The Quality Assurance Department prepares weekly reports that are presented at the Board of Directors meetings and extraordinary/atypical ratings are easy to flag.True population characteristics estimated from the sample results each week are called _________.

A telecommunications provider conducted a survey on mobile phone usage in Australia.The responses on 'whether all mobile phones in the household use the same telecommunications provider' is an example of a_________variable.

Simple random sampling is more efficient than stratified sampling.

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.The 500 employees who will participate in this study constitute the _________.

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. -The portion of students in the sample who visited the campus bar on the weekend before the final exam period is an example of

Which of the following is a discrete quantitative variable?

A telecommunications provider conducted a survey on mobile phone usage in Australia.The amount of time spent surfing the Internet per week is an example of _________ 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 population of interest is

When conducting a simple random sample,you should use N to represent the sample size and n to represent the frame size.

The difference in results for different samples of the same size is known as sampling error.

One of the 'big four' Australian banks is conducting research in order to understand the banking needs of Australian residents.Using data collected by the Australian Bureau of Statistics is an example of a _________source.

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

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.

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.The distance a person drives in a year is an example of a _________ variable.

The number of defective apples in a single box will be measured on an interval scale.