Statistics & Probability Review Chapters 1 & 2

Question 1

Characteristic whose value may change from one individual/subject to another

Accepted Answer

Variable

Question 2

Some issues of observational studies?

Accepted Answer

Under/Over Coverage

Question 3

Variable that is not an explanatory variable in the study but is thought to affect the response

Accepted Answer

Extraneous Variable

Question 4

Possible values of numerical values form an entire interval along the number line

Accepted Answer

Continuous Numerical

Question 5

Result from making observations either on a single or two or more variables

Accepted Answer

Data

Question 6

Experiment in which neither subjects or researchers know what treatment they received

Accepted Answer

Double-Blind Experiment

Question 7

Voluntary encounter between strangers in which an interviewer seeks information

Accepted Answer

Survey

Question 8

Dividing a population into "subgroups" then taking seperate samples from each group

Accepted Answer

Stratified Sampling

Question 9

Variables controlled by the experimenter, also called factors

Accepted Answer

Explanatory Variable

Question 10

Numerical, graphical and tabular methods for organizing and summarizing data

Accepted Answer

Descriptive Statistics

Question 11

Graph of numerical data where each observation is represented by a dot above a number line

Accepted Answer

Dot Plot

Question 12

Procedure investigating effects of experimental conditions (treatments) on a response variable

Accepted Answer

Experiment

Question 13

Individual responses are non-numerical responses (labels, brands)

Accepted Answer

Categorical Data

Question 14

Possible numerical values are isolated points along a number line

Accepted Answer

Discrete Numerical Data

Question 15

Relies entirely on individuals who volunteer to be a participant of the sample

Accepted Answer

Voluntary Response Sampling

Question 16

Obtaining information from an entire population

Accepted Answer

Census

Question 17

Dividing a population into subgroups, usually by location, and taking a sample from each group

Accepted Answer

Cluster Sampling

Question 18

The experimental conditions imposed by the experimenter

Accepted Answer

Treatments

Question 19

Individual observations are numerical in nature, can be measured

Accepted Answer

Numerical Data

Question 20

A table that displays frequencies and sometimes relative frequencies for categorical variables

Accepted Answer

Frequency Distribution

Question 21

LIST of objects or individuals in the population, used for selected SRS

Accepted Answer

Sampling Frame

Question 22

The entire collection of individuals or measurements about which information is desired

Accepted Answer

Population

Question 23

A group that receives no treatment

Accepted Answer

Control Group

Question 24

Smallest unit to which treatment is applied

Accepted Answer

Experimental Unit

Question 25

A sample selected that gives every different sample size an equal chance of being selected

Accepted Answer

Simple Random Sampling

Question 26

A graph of frequency distribution for a categorical data set each represented by seperate bars

Accepted Answer

Bar Chart

Question 27

Variable that is related both to group membership and to the response variable

Accepted Answer

Confounding Variable

Question 28

Holding extraneous variables constant so their effects aren't confounded with the experiment

Accepted Answer

Direct Control

Question 29

Assigning experimental units to treatments or treatment trials at random

Accepted Answer

Random Assignment

Question 30

Each observation consists of two response variables

Accepted Answer

Bivariate Data

Question 31

After being included in the sample, an individual would not be considered for further selection

Accepted Answer

Sampling without Replacement

Question 32

Any particular combination of values for the explanatory variables, also called treatments

Accepted Answer

Experimental Condition

Question 33

A part of the population selected for the study

Accepted Answer

Sample

Question 34

Methods for generalizing from a sample to a population

Accepted Answer

Inferential Statistics

Question 35

Each observation consists of response variable

Accepted Answer

Univariate Data

Question 36

Variable that is NOT controlled by the experimenter that is measured as part of the experiment

Accepted Answer

Response Variable

Question 37

Systematic exclusion of some part of the population when creating a sample

Accepted Answer

Selection Bias

Question 38

The manipulation of one or more explanatory variables called _to create experimental conditions

Accepted Answer

Factors

Question 39

Sample selected from an ordered arrangement of a population, selecting every kth individual

Accepted Answer

Systematic Sample

Question 40

Strategy to ensure there is an adequate number of observations in each experimental treatment

Accepted Answer

Replication

Question 41

Each observation has more than two responses or values

Accepted Answer

Multi Variate Data

Question 42

An experiment where only one party (subjects/researcher) knows the treatments received

Accepted Answer

Single-Blind Experiment

Question 43

When measurements are not obtained from all individuals in sample

Accepted Answer

Non Response Bias

Question 44

Number of times the category appears in the data set

Accepted Answer

Frequency

Question 45

Using extraneous variables to create blocks of similar groups

Accepted Answer

Blocking

Question 46

A study that observes characteristics of an existing population

Accepted Answer

Observational Study

Question 47

Method of of observation tends to produce values different from the true value (lies, measures)

Accepted Answer

Response Bias

Question 48

Treatment that resembles other treatments but has no active ingredients

Accepted Answer

Placebo Treatment

Question 49

After each item is selected in a sample the item is replaced back into the population

Accepted Answer

Sampling with Replacement

Question 50

Sampling that is using an easily available group to form a sample

Accepted Answer

Convenience Sample

Statistics & Probability Review Chapters 1 & 2

Questions 50

Statistics & Probability Review Chapters 1 & 2

Questions 50