Exam 1: Defining and Collecting Data

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Scenario 1-2, the possible responses to the question "How would you rate the Condition of the U.S.economy with 1 = excellent, 2 = good, 3 = decent, 4 = poor, 5 = terrible?" Are values from a

Which of the following is a continuous quantitative (numerical)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?

The 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 campus bars on the Weekend before the final exam week.Her assistant took a random sample of 250 students and Computed the portion of students in the sample who visited campus bars on the weekend before The final exam.The portion of all students at her university who visited campus bars on the Weekend before the final exam week is an example of

The brand of TV one owns is an example of an ordinal scaled variable.

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 "How many people are there in Your household?" are values from a

True or False: As a population becomes large, it is usually better to obtain statistical information from the entire population.

Which of the following yields a simple random sample?

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 "Are you happy, indifferent, or Unhappy with the performance per dollar spent on the Blu-ray player?" are values from a

The amount of calories contained in a 12-ounce package of cheese is an example of a discrete variable.

For a population frame containing N = 1,007 individuals, what code number should you assign To the first person on the list in order to use a table of random numbers?

True or False: The question "Is your household income last year somewhere between $50,000 and $100,000?" will most likely result in coverage error.

True or False: The professor of a business statistics class wanted to find out the mean amount of time per week her students spent studying for the class.Among the 50 students in her class, 20% were freshmen, 50% were sophomores and 30% were juniors.She decided to select 2 students randomly from the freshmen, 5 randomly from the sophomores and 3 randomly from the juniors. This is an example of a systematic sample.

Which of the following types of samples can you use if you want to make valid statistical Inferences from a sample to a population?

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 on a daily basis 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 Dean of Students conducted a survey on campus.Major area of study is an example of a _______ variable.

The 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 campus bars on the Weekend before the final exam week.Her assistant took a random sample of 250 students.The Answer on "whether you visited campus bars on the weekend before the final exam week" from Students in the sample is an example of __________.

Most colleges admit students based on their achievements in a number of different areas.Whether a student has taken any advanced placement courses is an example of a _______ variable.

Referring to Scenario 1-2, the possible responses to the question "In which year do you think the Last recession in the U.S.started?" are values from a

Most analysts focus on the cost of tuition as the way to measure the cost of a college education. But incidentals, such as textbook costs, are rarely considered.A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand.To do so, She monitored the textbook cost of 250 first-year students and found that their average textbook Cost was $600 per semester.Identify the population of interest to the researcher.