Chapter 1

Question 1

A numerical summary of a sample

Answer 1

Statistic

Question 2

Organizes and summarizes data through tables, graphs, and numerical summaries

Answer 2

Descriptive Statistics

Question 3

The science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions. It is also about providing a measure of confidence in any conclusions

Answer 3

Statistics

Question 4

A subset of the group of individuals that is being studied

Answer 4

Sample

Question 5

Uses methods that take results from a sample and extends them to the population, and measures the reliability of the result

Answer 5

Inferential Statistics

Question 6

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

Answer 6

Individual

Question 7

A numerical summary of a population

Answer 7

Parameter

Question 8

The entire group of individuals to be studied

Answer 8

Population

Question 9

Provides numerical measures of individuals. The values can be added or subtracted, and provide meaningful results

Answer 9

Quantitative Variable

Question 10

Allows for classification of individuals based on some attribute or characteristic

Answer 10

Qualitative Variable

Question 11

Information that describes characteristics of an individual

Answer 11

Data

Question 12

The characteristics of the individuals within the population

Answer 12

Variable

Question 13

Has either a finite number of possible values or countable number of possible values. The values of these variables typically result from counting

Answer 13

Discrete Variables

Question 14

Has an infinite number of possible values that are not countable. The values of these variables typically result from measurement

Answer 14

Continuous Variables

Question 15

The values of the variable name, label, or categorize. In addition, the naming scheme does not allow for the values of the variable to be arranged in a ranked or specific order

Answer 15

Nominal Level of Measurement

Question 16

The values of the variable name, label, or categorize. In addition, the naming scheme allows for the values of the variable to be arranged in a ranked or specific order

Answer 16

Ordinal Level of Measurement

Question 17

Allows for the values of the variable to be arranged in a ranked or specific order. Differences in the values of the variable have meaning, but a value of zero does not mean the absence of the quantity. Arithmetic operations such as addition and subtraction can be performed on the values of the variable

Answer 17

Interval Level of Measurement

Question 18

What are the processes, in order, for the methods of statistics?

Answer 18

1. Identify the research objective
2. Collect the data needed to answer the research question(s)
3. Describe the data
4. Perform inference

Question 19

Allows for the values of the variable to be arranged in a ranked or specific order. Values of the variable have meaning and a value of zero means the absence of the quantity. Arithmetic operations such as addition and subtraction can be performed on the values of the variable

Answer 19

Ratio Level of Measurement

Question 20

Every possible sample has an equally likely chance of occurring

Answer 20

Simple Random Sample

Question 21

Obtained by separating the population into non overlapping groups called strata and then obtaining a simple random sample from each stratum. The individuals within each should be similar in some way

Answer 21

Stratified Sample

Question 22

Obtained by selecting every kth individual from the population. The first individual selected corresponds to a random number between 1 and k

Answer 22

Systematic Sample

Question 23

Obtained by selecting all individuals within a randomly selected collection or group of individuals

Answer 23

Cluster Sample

Question 24

A sample in which the individuals are easily obtained and not based on randomness

Answer 24

Convenience Sample