Question 1

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.Using the information obtained from the sample to predict population characteristics with respect to malpractice litigation is an example of .

Accepted Answer

inferential statistics

Question 2

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.In this study,the presentation and characterization of the two main measures calculated each day (i.e. ,average number of damaged oranges per tree and proportion of trees having damaged oranges)is called .

Accepted Answer

descriptive statistics/methods

Question 3

The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of
A)inferential statistics.
B)descriptive statistics.
C)operational definition.
D)DCOVA framework.

Accepted Answer

Descriptive statistics involve the collection, analysis, and summary of data to describe phenomena or characteristics of a group. In this case, the collection and summary of the socioeconomic and physical characteristics of employees falls under the category of descriptive statistics. Inferential statistics involves making estimates and drawing conclusions about a population based on a sample, operational definition refers to defining a concept or variable in terms of the operations or procedures used to measure it, and the DCOVA framework is a tool used for evaluating research studies. None of these options are applicable to the given scenario.

Question 4

Business analytics combine "traditional" statistical methods with methods and techniques from management science and information systems to form an interdisciplinary tool that supports fact-based management decision making.

Accepted Answer

Business analytics indeed combine "traditional" statistical methods with methods and techniques from management science and information systems to form an interdisciplinary tool that supports fact-based management decision making.

Question 5

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

Accepted Answer

The answer of The Commissioner of Health in New York...

Question 6

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.In this study,drawing conclusions on any one day about the true population characteristics based on information obtained from the sample is called .

Accepted Answer

The answer of The oranges grown in corporate farms in...

Question 7

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.In this study,methods involving the collection,presentation,and characterization of the data are called .

Accepted Answer

The answer of The Human Resources Director of a large...

Question 8

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 variable of interest to the researcher.
A)The textbook cost of first-year Drummand University students.
B)The year in school of Drummand University students.
C)The age of Drummand University students.
D)The cost of incidental expenses of Drummand University students.

Accepted Answer

The variable of interest to the researcher is the textbook cost of first-year Drummand University students as stated in the question. The other options are not relevant to the researcher's objective.

Question 9

The process of using data collected from a small group to reach conclusions about a large group is called
A)statistical inference.
B)DCOVA framework.
C)operational definition.
D)descriptive statistics.

Accepted Answer

Statistical inference refers to the process of using a sample of data to make inferences about a larger population. It involves analyzing and interpreting data to determine if there are any patterns or relationships between variables. This process allows researchers to draw conclusions about a larger group based on a smaller sample size. The other answer choices are not directly related to this process.

Question 10

Compiling the number of registered voters who turned out to vote for the primary in Iowa is an example of descriptive statistics.

Accepted Answer

Descriptive statistics summarize and organize characteristics of a data set, such as compiling the number of registered voters who turned out to vote, which is an example of describing a dataset without inferring beyond the data.

Question 11

Managers need an understanding of statistics to be able to present and describe information accurately,draw conclusions about large populations based on small samples,improve processes,and make reliable forecasts.

Accepted Answer

Managers need a good understanding of statistics to be able to accurately present and describe information, make informed decisions, improve processes, and make reliable forecasts.

Question 12

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.In this study,methods that result in decisions concerning population characteristics based only on the sample results are called .

Accepted Answer

The answer of The Human Resources Director of a large...

Question 13

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
A)statistical inference.
B)DCOVA framework.
C)operational definition.
D)descriptive statistics.

Accepted Answer

Descriptive statistics involve the collection, presentation, and characterization of a set of data in order to properly describe its various features, such as measures of central tendency (mean, median, mode) or variability (range, variance, standard deviation). Statistical inference, on the other hand, involves making predictions and generalizations about a larger population based on a sample of data. The DCOVA framework and operational definition are other concepts used in data analysis but are not directly related to the methods of describing data.

Question 14

Using the number of registered voters who turned out to vote for the primary in Iowa to predict the number of registered voters who will turn out to vote in Vermont's primary is an example of descriptive statistics.

Accepted Answer

This is an example of inferential statistics because it involves using data from one population (Iowa registered voters) to make a prediction about another population (Vermont registered voters). Descriptive statistics would involve simply summarizing the characteristics of the Iowa primary voters, such as their age, gender, or party affiliation.

Question 15

A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam.This is an example of inferential statistics.

Accepted Answer

Inferential statistics involves using a sample to make inferences or predictions about a larger population, which is exactly what the professor did by using the sample average to estimate the population average.

Question 16

Which of the following is true about business analytics?
A)It enables you to use statistical methods to analyze and explore data to uncover unforeseen relationships.
B)It enables you to use management science methods to develop optimization models that impact an organization's strategy,planning,and operations.
C)It enables you to use complex mathematics to replace the need for organizational decision making and problem solving.
D)It enables you to use information systems methods to collect and process data sets of all sizes.

Accepted Answer

The answer of Which of the following is true about...

Question 17

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 variable of interest in the study.
A)The age of an American pine tree in Yosemite National Forest.
B)The height of an American pine tree in Yosemite National Forest.
C)The number of American pine trees in Yosemite National Forest.
D)The species of trees in Yosemite National Forest.

Accepted Answer

The variable of interest in the study is the height of an American pine tree in Yosemite National Forest, specifically those that reach heights greater than 60 feet tall. This is the specific characteristic that the study is trying to understand and analyze. The other options (A, C, D) may be relevant to other aspects of the forest, but they are not the focus of this particular study.

Question 18

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

Statistically unsophisticated users may not fully understand the assumptions and limitations of statistical procedures, leading to potential misinterpretation or misuse of results obtained from computer software.

Question 19

The estimation of the population average family expenditure on food based on the sample average expenditure of 1,000 families is an example of
A)inferential statistics.
B)descriptive statistics.
C)DCOVA framework.
D)operational definition.

Accepted Answer

Estimating the population average based on a sample is an example of inferential statistics, which involves drawing conclusions and making predictions about a population based on data from a sample. Descriptive statistics would involve simply describing the characteristics of the sample (such as the sample mean expenditure). DCOVA framework and operational definition are not relevant to this scenario.

Question 20

Which of the following is an element of descriptive statistical problems?
A)An inference made about the population based on the sample.
B)The population or sample of interest.
C)Tables,graphs,or numerical summary tools.
D)Identification of patterns in the data.

Accepted Answer

The answer of Which of the following is an element...

Quiz 21: Getting Started: Important Things to Learn First

The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of

Business analytics combine "traditional" statistical methods with methods and techniques from management science and information systems to form an interdisciplinary tool that supports fact-based management decision making.

The process of using data collected from a small group to reach conclusions about a large group is called

Compiling the number of registered voters who turned out to vote for the primary in Iowa is an example of descriptive statistics.

Managers need an understanding of statistics to be able to present and describe information accurately,draw conclusions about large populations based on small samples,improve processes,and make reliable forecasts.

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

Using the number of registered voters who turned out to vote for the primary in Iowa to predict the number of registered voters who will turn out to vote in Vermont's primary is an example of descriptive statistics.

A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam.This is an example of inferential statistics.

Which of the following is true about business analytics?

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.

The estimation of the population average family expenditure on food based on the sample average expenditure of 1,000 families is an example of

Which of the following is an element of descriptive statistical problems?