Exam 1: Introduction and Data Collection

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.

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

The date when a new factory becomes operational will be measured with a ratio scale.

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.Values computed from the sample results each week are called ________.

The Dean of Students conducted a survey on campus.The number of units currently enrolled for 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 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 "Out of a 7 point scale with 7 being 'extremely satisfied' and 1 being 'extremely unsatisfied',what is your satisfaction level on the DVD player that you purchased?" are values from a

The answer to the question "How many hours on average do you spend watching TV every week?" is an example of a discrete variable.

The amount of alcohol consumed by a person per week will be measured on an interval scale.

Data collected and distributed by the Australia Bureau of Statistics to be used for analysis by an organisation or individual can be classified as primary data.

A summary measure that is computed to describe a characteristic of an entire population is called

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.A person's age is an example of a ________ numerical variable.

The estimation of the population average family expenditure on food based on the sample average expenditure of 1,000 families is an example of

Marital status is an example of an ordinal scaled variable.

The sports shoes for adults sold in Australia are often marked with sizes based on the US or UK system.In this case,shoe size is an example of

A population is the totality of items or things under consideration.

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

Managers need an understanding of statistics to be able to present and describe information accurately,draw conclusions about large populations based on small samples,improve processes,and make reliable forecasts.

The amount of time a student spent studying for an exam is an example of a continuous variable.

Whether a university student is a full-fee student or a HECS student is an example of a categorical variable.

A statistic is usually unobservable while a parameter is usually observable.