Chapter 1:Introduction

18. All members of a sample are members of a population? True or False

True

Statistics is a very general field in that it can be utilized in a wide variety of areas of study. True or False.

True

What is the larger group from which a sample is drawn?

population

Name two common descriptive statistics.

mode ( descriptive statistic that summarizes the choice) the most frequently occurring score in a distribution. mean (ex to know the average age, identifies the variable) a type of average where scores are summed and divided by the number of observations. median, frequency

Inferential statistics is most often used for which of the following?

. interpreting data to make inferences from a smaller group of data to a possibly larger one. . are often the next step after you have collected and summarized data.

Provide three examples of how taking a statistics class may benefit you.

. looks good ona transcript . separates you from others . intellectual challenge . preprares you for understanding concepts in other sciences . you need it for graduate school

List five ways to succeed in this statistics class.

. remind yourself you are not dumb . keep an open mind about statistics . work through the chapters ( dont skip lessons) . form a study group . ask the teacher or friend questions . complete the excercises at the end of each chapter

When did the first collection of a set of data pertaining to populations occur?

17th century

16. _____ statistics involve collecting, organizing, and summarizing data.

Descriptive

2. The average age of everyone in the class is an example of what type of statistics?

Descriptive

1. Which of the following would be used to describe the type of statistical methods used to organize and describe the characteristics of a collection of data?

Descriptive Statistics

3.Which of the following would be used to describe the type of statistical methods used to organize and describe the characteristics of a collection of data?

Descriptive Statistics(the average age of everyone in this class)

2.Which of the following individuals used statistical methods during the 17th century to study the intelligence of his family members?

Francis Galton

3. Who popularized the use of correlation coefficient?

Francis Galton

Who popularized the use of the correlation coefficient?

Francis Galton

13. If your professor tells you, "if you don't start with reliable data, you'll end up with unreliable results" what does she mean?

Garbage in, garbage out

15. A common goal in statistics is to:

Generalize results from a sample to a population

12. ____ statistics are often (but not always) the next step after you have some basic understanding of data?

Inferential

14. What type of statistics employs the use of sample data that is used to infer information about the population?

Inferential statistics

5. Inferential Statistics involve _______ the data?

Interpreting

What is a data set?

a set of data points . a collection of information or data

What is a sample?

a subset of a population . smaller portion (representative portion) or the larger group or population. . is the group from whom data is collected in hopes of generalizing results to the population

When should inferential statistics typcially be used?

after descriptive statistics

Statistics is used in the following fields:

agriculture, astronomy , psychology, education, anthropology and even politics and human behavior much later

When are descriptive measures most often used?

collection of data . to describe how often something occurs

8. What is a collection of information also called?

data set

What is a collection of information also called?

data set or data

The average age of everyone in the class is an example of what type of statistics?

descriptive statistics

What type of statistics are used to organize and describe the characteristics of a collection of data?

descriptive statistics

What is the difference between descriptive and inferential statistics?

descriptive statistics organizes and describes data, while inferential statistics used to infer meaning about a larger population from a sample of the population

20. What is the small subset of the population from whom you collect data called?

sample

7. ____ is to smaller group data as population is to larger group of data.

sample

What is the small subset of the population from whom you collect data called?

sample

What term is defined as a set of tool and techniques used for describing, organizing, and interpreting data?

statistics

What term is used to describe the science of organizing and analyzing information to make the information more easily understood?

statistics

17. Statistics describes a set of ____ that is used for describing, organizing and interpreting data.

tools and techniques

How are inferential statistics most often used?

used to make inferences from a smaller group of data ( our group of 22 students) to a possible larger one ( all the undergraduate students in the college of arts)

Define inferential statistics.

used to make inferences from a smaller group of data to a possible larger one . tools that are used to infer the results based on a sample to a population

Which of the following is a use of descriptive statistics?

used to organize and describe the characteristics of a collection of data. . organizing data, summarizing dataand collecting data

Define descriptive statistics.

used to organize and describe the characteristics of a collection of data. . values that describe the characteristics of a sample or population

19. Descriptive and inferential statistics work hand in hand, and which one you use depends on

what question you want answered.

In what century, was the simplest test for examining differences between two groups first advanced?

early 20th century

If your professor tells you, "if you don't start with reliable data, you'll end up with unreliable results," what does he/she mean?

garbage in, garbage out

A common goal in statistics is to:

generalize results from a sample to a population

What type of statistics employ the use of sample data that is used to infer information about the population?

inferential statistics

What will you need to complete most statistical analyses?

most statistical analyses no longer require access to a huge and expensive mainframe computer. Instead a simple personal computer can do it.

11. Inferential statistics is most often used for which of the following?

Interpreting Data

6. Which of the following is NOT a use of descriptive statics?

Interpreting the data

4. They type of descriptive statistic that tells you the most popular/frequent choice from a number of choices in the:

Mode

9. Statistics is used in the following fields:

Psychology, Anthropology, Education and Neuroscience

10. What term is used to describe the science of organizing and analyzing info to make info more easily understood?

Statistics