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# Statistics for Managers

Statistics

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## Quiz 1 : Instruction and Data Collection

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 $300 per semester. Identify the population of interest to the researcher. Free Multiple Choice Answer: Answer: C A study is under way in Yosemite National Forest to determine the adult height of American pine trees. Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 60 feet tall. It is estimated that the forest contains 25,000 adult American pines. The study involves collecting heights from 250 randomly selected adult American pine trees and analyzing the results. Identify the population from which the study was sampled. Free Multiple Choice Answer: Answer: B Which of the following is not an element of descriptive statistical problems? Free Multiple Choice Answer: Answer: A Researchers suspect that the average number of units earned per semester by college students is rising. A researcher at Calendula College wishes to estimate the number of units earned by students during the spring semester at Calendula. To do so, he randomly selects 100 student transcripts and records the number of units each student earned in the spring term. He found that the average number of semester units completed was 12.96 units per student. Identify the population of interest to the researcher. Multiple Choice Answer: The universe or "totality of items or things" under consideration is called Multiple Choice Answer: The process of using sample statistics to draw conclusions about true population parameters is called Multiple Choice Answer: 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 Multiple Choice Answer: Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called Multiple Choice Answer: 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$300 per semester. Identify the variable of interest to the researcher.
Multiple Choice
Which of the following is most likely a population as opposed to a sample?
Multiple Choice
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 \$300 per semester. Identify the sample in the study.
Multiple Choice
The estimation of the population average family expenditure on food based on the sample average expenditure of 1,000 families is an example of
Multiple Choice
A summary measure that is computed to describe a characteristic of an entire population is called
Multiple Choice
A study is under way in Yosemite National Forest to determine the adult height of American pine trees. Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 60 feet tall. It is estimated that the forest contains 25,000 adult American pines. The study involves collecting heights from 250 randomly selected adult American pine trees and analyzing the results. Identify the sample in the study.
Multiple Choice
The portion of the universe that has been selected for analysis is called
Multiple Choice
A summary measure that is computed to describe a characteristic from only a sample of the population is called
Multiple Choice