Statistics Chapter 1-4 Vocab

Front 1

Statistics

Back 1

The art of collecting, analyzing and interpreting data

Front 2

Data

Back 2

The facts and figures collected, summarized for presentation and interpreting

Front 3

Data Set

Back 3

All the data collected in a study

Front 4

Elements

Back 4

The entities on which data are collected

Front 5

Variable

Back 5

A characteristic of interest for the elements

Front 6

Observation

Back 6

The set of measurements obtained for a particular element

Front 7

Nominal Scale

Back 7

The scale of measurement for a variable when that data are labels or names used to identify an attribute of an element . Nominal data can be non numeric or numeric

Front 8

Ordinal Scale

Back 8

The scale of measurement for a variable if the data exhibits the properties of nominal data and the order or rank is meaningful. May be # or not

Front 9

Interval Scale

Back 9

The scale of measurement for a variable if the data demonstrate the properties of ordinal data and the between the values is expresses in terms of a fixed unit of measure. Always#

Front 10

Ratio Scale

Back 10

The scale of Measure for a variable if the data demonstrate all the properties of an interval data and the ratio between the two values is meaningful. Always #

Front 11

Qualitative data

Back 11

Labels or names used to identify an attribute of each element. Either nominal or ordinal. may be #

Front 12

Quantitative Data

Back 12

Numeric Values that indicate how much or how many of something. Either interval or ratio.

Front 13

Qualitative Variable

Back 13

A variable with qualitative data

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Quantitative Variable

Back 14

A Variable with quantitative data

Front 15

Cross-sectional data

Back 15

Data collected at the same time

Front 16

Time series data

Back 16

Data collected over a period of time.

Front 17

Descriptive Statistics

Back 17

Tabular, Graphical, and numerical summaries of data

Front 18

Population

Back 18

The set of all elements of interest in a particular study.

Front 19

Sample

Back 19

A subset of the population

Front 20

Census

Back 20

A survey to collect data on the entire population

Front 21

Sample survey

Back 21

A survey to collect data on a sample

Front 22

Statistical inference

Back 22

The process of using data obtained from a sample to make estimates about a population

Front 23

Qualitative data

Back 23

labels used to identify categories of like items

Front 24

Quantitative data

Back 24

values that indicate how much or how many

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Frequency Distribution

Back 25

A tabular Summary of Data showing the number(frequency) of data values in each of several non overlapping classes

Front 26

Relative frequency distribution

Back 26

A tabular summary of data showing the fraction or proportion of data values in each of several non overlapping classes

Front 27

Percent Frequency distribution

Back 27

a tabular summary of data showing the percent of data values in each of several non overlapping classes

Front 28

Bar graph

Back 28

a graphical device for depicting qualitative data that have been summarized in a frequency , relative frequency, or percent frequency distribution

Front 29

Pie Chart

Back 29

a graphical device for presenting data summaries based on subdivisions of a circle into sectors that correspond to the relative frequency

Front 30

Class midpoint

Back 30

the value half way in between the upper and lower class limits

Front 31

Dot plot

Back 31

a graphical device that summarizes data by the numbers of dots above each data value on the horizontal axis

Front 32

Histogram

Back 32

A graphical presentation of a frequency distribution , relative frequency distribution or percent frequency distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies on the vertical axis

Front 33

Cumulative Frequency Distribution

Back 33

A tabular summary of quantitative data showing the number of data values that are less than or equal the the upper class limit of each class

Front 34

Cumulative Relative Frequency Distribution

Back 34

A tabular summary of quantitative data showing the percent of data values that are less than or equal the the upper class limit of each class

Front 35

Ogive

Back 35

a graph of cumulative distribution

Front 36

Exploratory data analysis

Back 36

Methods that use simple arithmetic and easy to draw graphs to summarize data quickly

Front 37

Stem and Leaf Display

Back 37

An exploratory data analysis techniques that simultaneously rank orders quantitative data and provides insight about the shape of the distribution

Front 38

Cross tabulation

Back 38

a tabular summary of data of two variables. The classes for one variable are represented by the rows, and the other by columns

Front 39

Simpson's Paradox

Back 39

Conclusions drawn from two or more separate Cross tabulations that can be reversed when the data are aggregated into a single Cross tabulation

Front 40

Scatter Diagram

Back 40

A graphical presentation of the relationship between two Quantitative Variables. One on the horizontal and the other on the vertical.

Front 41

Trend Line

Back 41

A line that provides a approximation of the relationship between two variables.