Exam 1: Defining and Collecting Data

Researchers are concerned that the weight of the average American school child is increasing implying,among other things,that children's clothing should be manufactured and marketed in larger sizes.If X is the weight of school children sampled in a nationwide study without rounding,then X 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 numerical variable.

The oranges grown in corporate farms in an agricultural state were damaged by some unknown fungi a few years ago.Suppose the manager of a large farm wanted to study the impact of the fungi on the orange crops daily over a 6-week period.On each day a random sample of orange trees was selected from within a random sample of acres.The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated.The two main measures calculated each day (i.e. ,average number of damaged oranges per tree and proportion of trees having damaged oranges)are called .

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

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

SCENARIO 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 Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-1,the possible responses to the question "What is your annual income rounded to the nearest thousands?" result in

When dealing with human surveys,we are usually interested in sampling with replacement.

The sampling process begins by locating appropriate data sources called .

SCENARIO 1-3 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-3,if there are 4 different brands of Blu-ray players made by the company,the best sampling strategy would be to use a

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.

Which of the following sampling methods is a probability sample?

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.How long a person has been a licensed driver is an example of a numerical variable.

The Commissioner of Health in New York State wanted to study malpractice litigation in New York.A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010.The true proportion of malpractice claims filed from the population of 2.7 million patients is a .

SCENARIO 1-3 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-3,if a customer survey questionnaire is included in all the Blu-ray players made and sold by the company over the past 12 months,this method of collecting data will most like suffer from

The amount of time a student spent studying for an exam will be measured on a ratio scale.

A convenience sample is a type of probability sample.

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

The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products.Which of the following will be a good frame for drawing a sample?

The answer to the question "How do you rate the quality of your business statistics course" is an example of an ordinal scaled variable.

The number of defective apples in a single box is an example of a continuous variable.