Vocabulary

Question 1

When describing a relationship using the format changes in Y as a function of X

Answer 1

As a Function of

Question 2

A vertical bar is centered over each score on the X axis and adjacent bars do not touch

Answer 2

Bar Graph

Question 3

A symmetrical distribution containing two distinct humps, each reflecting relatively high frequency scores

Answer 3

Bimodal Distribution

Question 4

A scale measure with whole numbers and decimals

Answer 4

Continuous Scale

Question 5

When neither variable is manipulated by the researcher, you have a

Answer 5

Correlational Study

Question 6

NEED

Answer 6

Cumulative Frequency

Question 7

Observations and measurements result in numbers or scores, called

Answer 7

Data

Question 8

Each dot on graph

Answer 8

Data Point

Question 9

The variable which measures a participant’s behavior under each condition

Answer 9

Dependent Variable

Question 10

Procedures for organizing and summarizing sample data so that we can communicate and describe their important characteristics

Answer 10

Descriptive Statistics

Question 11

The way a study is laid out

Answer 11

Design

Question 12

Indicates the score is different from the mean, is equal to the score minus the mean

Answer 12

Deviation

Question 13

NEED

Answer 13

Dichotomous Variable

Question 14

A scale measured in whole numbers only, variable in one group or another

Answer 14

Discrete Scale

Question 15

An organized data set

Answer 15

Distribution

Question 16

Where a researcher actively changes, or manipulates one variable and then measures participants’ scores on another variable to see if a relationship is produced

Answer 16

Experiment

Question 17

The number of times a score occurs in a data set

Answer 17

Frequency

Question 18

Where a data point is placed over each score on the X axis at height corresponding to the appropriate frequency

Answer 18

Frequency Polygon

Question 19

NEED

Answer 19

Grouped Distribution

Question 20

A bar graph where adjacent bars do touch

Answer 20

Histogram

Question 21

The variable that is changed or manipulated by the experimenter

Answer 21

Independent Variable

Question 22

Procedure for deciding weather sample data accurately represent a particular relationship in the population

Answer 22

Inferential Statistics

Question 23

A scale in which the numbers measure a specific amount, no true zero

Answer 23

Interval Scale

Question 24

A specific amount or category of the independent variable that creates the specific situation under which participants are examined

Answer 24

IV Conditions

Question 25

NEED

Answer 25

Line Graph

Question 26

The score located at the mathematical center of a distribution

Answer 26

Mean

Question 27

The score at the 50th percentile

Answer 27

Median

Question 28

A score that summarizes the location of a distribution on a variable

Answer 28

Measure of Central Tendency

Question 29

The most frequently occurring score in a data set

Answer 29

Mode

Question 30

Contains extreme low scores that have a low frequency but does not contain low frequency, extreme high scores

Answer 30

Negatively Skewed Distribution

Question 31

Each score does not indicate an amount, rather it is used for identification (name)

Answer 31

Nominal Scale

Question 32

A bell shaped curve which represents that the scores are normally distributed

Answer 32

Normal Curve

Question 33

A scale where the scores indicate a ranking (ordered)

Answer 33

Ordinal Scale

Question 34

A number that describes a characteristic of a population of scores

Answer 34

Parameter

Question 35

The individuals measured in a sample

Answer 35

Participant

Question 36

A proportion multiplied by 100

Answer 36

Percent

Question 37

NEED

Answer 37

Percentile

Question 38

The entire group of individuals to which a law of nature applies

Answer 38

Population

Question 39

Contains extreme high scores that have low frequency but does not contain low frequency, extreme low scores

Answer 39

Positively Skewed Distribution

Question 40

A decimal number between 0 and 1 that indicates a fraction of the total

Answer 40

Proportion

Question 41

NEED

Answer 41

Ratio Scale

Question 42

A pattern in which the as scores on one variable change the corresponding scores on the other variable change in a consistent manner

Answer 42

Relationship

Question 43

NEED

Answer 43

Relative Frequency

Question 44

NEED

Answer 44

Relative Frequency Distribution

Question 45

A symmetrical distribution where there are no tails because the frequencies of scores are all the same

Answer 45

Rectangular Distribution

Question 46

A relatively small subset of a population, intended to represent the population

Answer 46

Sample

Question 47

Indicates the number of times each score occurs in a data set

Answer 47

Simple Frequency

Question 48

A number that is the answer from a descriptive procedure that describes a sample of scores

Answer 48

Statistic

Question 49

The codes used for symbolizing the mathematical operations performed in the formula and answers we obtained

Answer 49

Statistical Notation

Question 50

Extent to which one or close to one value of Y tends to be consistently associated with only one value of X

Answer 50

Strength of Relationship

Question 51

What you have when you add all of the positive and negative deviations together

Answer 51

Sum of the Deviations Around the Mean

Question 52

To find the scores of X

Answer 52

Sum of X

Question 53

The extreme scores in a data set, can be on both ends or just one end of graph

Answer 53

Tail

Question 54

A mathematical procedure for converting a set of scores into a different set of scores

Answer 54

Transformation

Question 55

NEED

Answer 55

Ungrouped Distribution

Question 56

When a polygon has one hump, indicating the score qualifies as the mode

Answer 56

Unimodel Distribution

Question 57

Anything that when measured can produce two or more different scores

Answer 57

Variable