Question 1

Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated locations on the Melbourne CityLink freeway system?
A)Data distributed by an organisation or an individual.
B)A designed experiment.
C)A survey.
D)An observational study.

Accepted Answer

This scenario involves observing and counting the number of cars passing designated locations, which is an example of an observational study. The researcher is not manipulating any variables or asking individuals to provide information, which rules out designed experiments and surveys. The data is also not being distributed by an organization or individual in this scenario.

Question 2

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 ________.

Accepted Answer

The answer of The Quality Assurance Department of a large...

Question 3

The possible responses to the question "How long have you been living at your current residence?" are values from a continuous variable.

Accepted Answer

The duration of time someone has lived at their current residence can be measured in a continuous scale, such as years, months, days, or even smaller units of time, allowing for an infinite number of possible values.

Question 4

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.

Accepted Answer

The data collected and distributed by the Australia Bureau of Statistics is considered secondary data because it has been collected by an entity (the Bureau) and is being reused by another party for analysis, rather than being collected firsthand by the user for their specific purpose.

Question 5

A statistics student found a reference in the campus library that contained the median family incomes for all Australian states and territories.She would report her data as being collected using
A)a designed experiment.
B)a published source.
C)a random sample.
D)observational data.

Accepted Answer

The data was obtained from a published source, meaning it was not collected by the student herself through experimentation, observation or sampling.

Question 6

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.

Accepted Answer

The answer of One of the "big four" Australian banks...

Question 7

Tim was planning for a meeting with his boss to discuss a raise in his annual salary.In preparation,he wanted to use the Consumer Price Index to determine the percentage increase in his real (inflation-adjusted)salary over the last three years.Which of the 4 methods of data collection was involved when he used the Consumer Price Index?
A)Data distributed by an organisation or an individual.
B)A designed experiment.
C)A survey.
D)An observational study.

Accepted Answer

The Consumer Price Index is data distributed by an organization, typically a government agency, which collects and publishes this information for public use.

Question 8

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 true proportion of malpractice claims filed from the population of 850,000 patients is a ________.

Accepted Answer

The answer of The Department of Health in Western Australia...

Question 9

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 collection,presentation,and characterisation of the data from patient medical records are examples of ________.

Accepted Answer

The answer of The Department of Health in Western Australia...

Question 10

A continuous variable may take on any value within its relevant range even though the measurement device may not be precise enough to record it.

Accepted Answer

A continuous variable is one that can take on any value within a certain range, even if the measurement device is not precise enough to record it accurately. For example, a person's height is a continuous variable - they could be 5 feet 8 inches or 5 feet 8.123456 inches, even though a measuring tape might only be accurate to the nearest inch.

Question 11

The possible responses to the question "How many times in the past three months have you visited a city park?" are values from a discrete variable.

Accepted Answer

The number of times visited a city park in the past three months is a discrete variable because it can only take on whole number values (e.g. 0, 1, 2, 3 times).

Question 12

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 ________.

Accepted Answer

The answer of The Department of Health in Western Australia...

Question 13

A marketing research firm,in conducting a comparative taste test,provided three types of peanut butter to a sample of households randomly selected within the state.Which of the 4 methods of data collection is involved when people are asked to compare the three types of peanut butter?
A)Data distributed by an organisation or an individual.
B)A designed experiment.
C)A survey.
D)An observational study.

Accepted Answer

A designed experiment involves manipulating variables and studying the effects, which is exactly what is happening in this situation with the taste test of the three types of peanut butter. Option A (data distributed) does not apply as it is not about distributing data, but rather collecting data. Option C (survey) does not fully apply as a survey is typically a questionnaire or interview format, which is not how the taste test is being conducted. Option D (observational study) does not apply as there is a deliberate manipulation of the variable (type of peanut butter).

Question 14

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.

Accepted Answer

The answer of One of the "big four" Australian banks...

Question 15

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?
A)Data distributed by an organisation or an individual.
B)A designed experiment.
C)A survey.
D)An observational study.

Accepted Answer

The investor accessed existing information from an Internet site, which is data distributed by an organization or an individual, rather than collecting new data through experiments, surveys, or observational studies.

Question 16

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.

Accepted Answer

If users do not have a good understanding of statistical procedures and limitations, they may not be able to correctly interpret results obtained from computer software, which could lead to incorrect conclusions or decisions.

Question 17

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)Data distributed by an organisation or an individual.
B)A survey.
C)A designed experiment.
D)An observational study.

Accepted Answer

The method being used is a survey, as the marketing research analyst has provided a questionnaire instrument for participants to answer electronically to collect data on the effectiveness of the new television advertisement.

Question 18

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?
A)A designed experiment.
B)A random sample.
C)Observational data.
D)A published source.

Accepted Answer

Since the study surveyed 2500 people, a random sample is the most likely data collection procedure used. The researchers did not manipulate any variables or conduct an experiment, nor did they obtain data from a published source. Observational data would require the researchers to simply observe participants, which is not what they did in this study.

Question 19

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 ________.

Accepted Answer

The answer of The Department of Health in Western Australia...

Question 20

The personnel director at a large company studied the eating habits of the company's employees.The director noted whether employees brought their own lunches to work,ate at the company cafeteria,or went out to lunch.The goal of the study was to improve the food service at the company cafeteria.This type of data collection would best be considered as
A)a designed experiment.
B)an observational study.
C)a quota sample.
D)a random sample.

Accepted Answer

This is an observational study because the personnel director is simply observing and recording the eating habits of the employees, without manipulating any variables or imposing any treatments.

Quiz 1: Introduction and Data Collection

Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated locations on the Melbourne CityLink freeway system?

The possible responses to the question "How long have you been living at your current residence?" are values from a continuous variable.

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 statistics student found a reference in the campus library that contained the median family incomes for all Australian states and territories.She would report her data as being collected using

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.

A continuous variable may take on any value within its relevant range even though the measurement device may not be precise enough to record it.

The possible responses to the question "How many times in the past three months have you visited a city park?" are values from a discrete variable.

A marketing research firm,in conducting a comparative taste test,provided three types of peanut butter to a sample of households randomly selected within the state.Which of the 4 methods of data collection is involved when people are asked to compare the three types of peanut butter?

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.

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.

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?