Introduction to Practice of Statistics

What is the definition of statistics?

• The science of collecting, organizing, summarizing, and analyzing information

• The study of variability among individuals

• The process of making inferences from a sample to a population

• The numerical summary of a population

Which of the following is an example of data?

• The entire group of individuals to be studied

• A subset of the population being studied

• A person or object that is a member of the population being studied

• Characteristics of an individual

What is the purpose of descriptive statistics?

• To describe and understand sources of variability

• To measure something from a sample

• To extend results from a sample to a population

• To describe data from a sample

What is the purpose of inferential statistics?

• To describe and understand sources of variability

• To measure something from a sample

• To extend results from a sample to a population

• To describe data from a sample

Which of the following is an example of a parameter?

• The percentage of all students on your campus who have a job

• The percentage of students in a sample who have a job

• The numerical summary based upon a sample

• The numerical summary of a population

What is the first step in the process of statistics?

• Collecting the data needed to answer the research objective

• Identifying the research objective

• Describing the data using tables, graphs, and numerical summaries

• Performing inference to make conclusions

What is the second step in the process of statistics?

• Collecting the data needed to answer the research objective

• Identifying the research objective

• Describing the data using tables, graphs, and numerical summaries

• Performing inference to make conclusions

What is the third step in the process of statistics?

• Collecting the data needed to answer the research objective

• Identifying the research objective

• Describing the data using tables, graphs, and numerical summaries

• Performing inference to make conclusions

What is the fourth step in the process of statistics?

• Collecting the data needed to answer the research objective

• Identifying the research objective

• Describing the data using tables, graphs, and numerical summaries

• Performing inference to make conclusions

What conclusion can be drawn from the example given in the text?

• Males who batter their female partner and participate in a batter treatment program are more likely to do it again

• Males who batter their female partner and participate in a batter treatment program are less likely to do it again

• Males who batter their female partner and participate in community service are more likely to do it again

• Males who batter their female partner and participate in community service are less likely to do it again