Exam 1: The Where,Why,and How of Data Collection

When a marketing manager surveys a few of the customers for the purpose of drawing a conclusion about the entire list of customers,she is applying:

The summaries of data,which may be in forms of tabular,graphical,or numerical,are referred to as:

A college data base includes the number of people who are enrolled in each class the college offers.This is an example of:

As a member of the student council at your university,you have been assigned the task of conducting a phone survey of undergraduate students to determine satisfaction with the campus food service.Explain how you would go about selecting a simple random sample.

If a state agency wishes to conduct on-site surveys of small businesses throughout the state,cluster sampling could potentially be used to reduce the geographical area over which the surveys would need to be conducted.

The company that makes a new weight loss pill claims that people who use this pill according to instructions will lose an average of 20 pounds during a four-month period.They say the claim is based on a study of 300 people.Which of the following statistical methods was most likely used to arrive at the company's conclusion?

Hypothesis testing and estimation are two statistical tools that are used to draw inferences about a large data set based on a subset of the data.

Companies frequently use charts and graphs in their regular communications with stockholders and investors;this shows the use of descriptive statistics.

The First National Bank mailed out a survey to all 3,456 savings account customers.A total of 568 surveys were returned.Values computed from the returned surveys would constitute parameters since all 568 customers were surveyed.

When a group of university students takes a poll of their fellow students on whether they support a proposed fee increase,the sampling method they would use when students walking near the library are surveyed would be called a random sample.

Open-end questions are typically included in a survey when the objective is to provide the maximum opportunity for the respondent to express his or her opinion.

Which of the following statements is true?

Explain the difference between stratified random sampling and cluster random sampling.

Statistics are measures computed from the entire population of data.

Data collected on the Internet can generally be considered accurate since the data must go through a screening process before they can be placed on the Internet.

The Georgia Company,a pharmaceutical company,recently conducted a study in which 20 people were given a new drug and 20 other people were given a placebo.The objective was to determine whether there was a difference in pain relief between those using the new drug versus those using the placebo.The data collection used here is an example of an experiment.

Selection bias occurs when the respondent decides which of the questions on the survey to answer.

An Internet service provider has the capability of tracking the time that each of its customers spends connected to the Internet during a month.These data would constitute:

A consumer products company is considering introducing a new product nationally.To help make the decision,it first conducts a test market by selling the product for a few months in one city.This is an example of:

An Internet service provider wants to determine its level of customer satisfaction.The best data collection method to obtain the results most quickly is: