# Study sets matching "math statistics chapter 2"

Study sets

Diagrams

Classes

Users

if data are discrete and have relativel…

If data are discrete, but are many diff…

Classes

Lower Class limit

categories of data; observations (qualitative data)

Categories created with intervals of numbers

Categories of data

Small value within the class

if data are discrete and have relativel…

categories of data; observations (qualitative data)

If data are discrete, but are many diff…

Categories created with intervals of numbers

Raw data

Frequency distibution

Relative frequency

frequency / sum of all frequencies

Data obtained through observational studies or designed experi…

Distribution that lists each category of data and the number o…

The proportion (or percent) of observations within a category

Formula of relative frequency

Raw data

Data obtained through observational studies or designed experi…

Frequency distibution

Distribution that lists each category of data and the number o…

Bar Graph

Histogram

Frequency Histogram

Circle Graph (Pie Chart)

a graph with bars that are of uniform width and are evenly spa…

a graph with bars that represent a range of values on the hori…

a histogram that shows the ratio between class frequency and t…

shows the total quantity divided into component parts using pr…

Bar Graph

a graph with bars that are of uniform width and are evenly spa…

Histogram

a graph with bars that represent a range of values on the hori…

frequency distribution

raw data

class

frequency

the organization of raw data in table form, using classes and…

when the data are in original form

each raw data value is placed into a quantitative or qualitati…

the number of data values contained in a specific class

frequency distribution

the organization of raw data in table form, using classes and…

raw data

when the data are in original form

Variable

Data

Univariate Data Set

Categorical/Qualitative Data

Any characteristics whose value may change from one individual…

Results from making observations either on a single variable o…

Data set consisting of observations on a single attribute.

Individual observations are categorical responses (brown, blue…

Variable

Any characteristics whose value may change from one individual…

Data

Results from making observations either on a single variable o…

Bar Graph

Histogram

Frequency Histogram

Circle Graph (Pie Chart)

a graph with bars that are of uniform width and are evenly spa…

a graph with bars that represent a range of values on the hori…

a histogram that shows the ratio between class frequency and t…

shows the total quantity divided into component parts using pr…

Bar Graph

a graph with bars that are of uniform width and are evenly spa…

Histogram

a graph with bars that represent a range of values on the hori…

Percentile

relative frequency

Cumulative frequency

Cumulative relative frequency

is the percent of the distribution that is below the value of…

is the percent that a given category or interval occurs within…

add the counts in the frequency column for the current class a…

add the relative frequency (%) column for the current class an…

Percentile

is the percent of the distribution that is below the value of…

relative frequency

is the percent that a given category or interval occurs within…

boundaries

lower class limit

upper class limits

class width

the number halfway between an upper limit and the next lower l…

the smallest number that can belong to a particular class

the largest number that can belong to a particular class

difference between the lower limits or upper limits of two con…

boundaries

the number halfway between an upper limit and the next lower l…

lower class limit

the smallest number that can belong to a particular class

Frequency Distribution

Lower Class Limit

Upper Class Limit

Class Width

Table that shows classes or intervals of data entries with a c…

Least number that can belong to a class

Greatest number that can belong to a class

Distance between lower and upper limits of a consecutive class…

Frequency Distribution

Table that shows classes or intervals of data entries with a c…

Lower Class Limit

Least number that can belong to a class

bar graph

categorical frequency distribution

class

class boundaries

represents the data by using vertical or horizontal bars whose…

a frequency distribution used when the data are categorical (n…

quantitative or qualitative category

the upper and lower values of a class for a grouped frequency…

bar graph

represents the data by using vertical or horizontal bars whose…

categorical frequency distribution

a frequency distribution used when the data are categorical (n…

Bar Graph

Histogram

Frequency Histogram

Circle Graph (Pie Chart)

a graph with bars that are of uniform width and are evenly spa…

a graph with bars that represent a range of values on the hori…

a histogram that shows the ratio between class frequency and t…

shows the total quantity divided into component parts using pr…

Bar Graph

a graph with bars that are of uniform width and are evenly spa…

Histogram

a graph with bars that represent a range of values on the hori…

Percentile

Frequency Graph

Relative Frequency Graph

Cumulative Relative Frequency Graph

The pth percentile of a distribution is the value with p perce…

A graph showing the counts of each class in a distribution.

A graph showing the percent values of each class from the whol…

The cumulative relative frequency of successive class is the r…

Percentile

The pth percentile of a distribution is the value with p perce…

Frequency Graph

A graph showing the counts of each class in a distribution.

Bar Graph

Histogram

Circle Graph (Pie Chart)

Line Graph

a graph with bars that are of uniform width and are evenly spa…

a graph with bars that represent a range of values on the hori…

shows the total quantity divided into component parts using pr…

A graph showing the data measurements in order over a length o…

Bar Graph

a graph with bars that are of uniform width and are evenly spa…

Histogram

a graph with bars that represent a range of values on the hori…

bar graph

stacked bar graph

clustered bar graph

crosstabulation

graphical display of the categorical data where frequencies or…

bars divided into subparts of data and stacked on top of one a…

each set of bars represents a single category of one variable…

tabular method for simultaneously summarizing the data for two…

bar graph

graphical display of the categorical data where frequencies or…

stacked bar graph

bars divided into subparts of data and stacked on top of one a…

Percentile

Frequency Graph

Relative Frequency Graph

Cumulative Relative Frequency Graph

the value in a data set with p percent of values lower than it…

A graph showing the counts (or frequency) of each class in a d…

A graph showing the percent values of each class from the whol…

The cumulative relative frequency of successive class is the r…

Percentile

the value in a data set with p percent of values lower than it…

Frequency Graph

A graph showing the counts (or frequency) of each class in a d…

frequency

class

relative frequency

What should you always do when calculat…

the number of data points within a certain range

an interval of numbers spanning a portion of a data set

the percent of data within a certain range

round up

frequency

the number of data points within a certain range

class

an interval of numbers spanning a portion of a data set

Percentile

Standardizing

Standardized Score

Multiply/Dividing a Constant

the value in a data set with p percent of values lower than it…

The conversion of observations from original values to standar…

Also known as the z-score. Tells how many standard deviations…

Affects measures of center and spread, but not shape

Percentile

the value in a data set with p percent of values lower than it…

Standardizing

The conversion of observations from original values to standar…

Percentile

relative frequency

Cumulative frequency

Cumulative relative frequency

of the a distribution is the value with p percent of the obser…

divide the count in each class by the total number there were.…

add the counts in the frequency column for the current class a…

divide cumulative frequency by total number overall and then m…

Percentile

of the a distribution is the value with p percent of the obser…

relative frequency

divide the count in each class by the total number there were.…

Class frequency (f)

Relative Frequency (rF)...

Percent frequency (%f)

Bar Graphs

the number of population members in that class...

the fraction of population members in that class... rf = f/n...

the percentage of population members in that class... %f = 100(r…

Class frequency (f)

the number of population members in that class...

Relative Frequency (rF)...

the fraction of population members in that class... rf = f/n...

bar graph

categorical frequency distribution

class

class boundaries

a graph that uses vertical or horizontal bars to show comparis…

a frequency distribution used when the data are categorical

in classification, a group of closely related orders

the numbers that separate classes without forming gaps between…

bar graph

a graph that uses vertical or horizontal bars to show comparis…

categorical frequency distribution

a frequency distribution used when the data are categorical

EXPERIMENT

EXPERIMENTAL UNIT

CONTROL GROUP

PLACEBO

a controlled study conducted to determine the effect varying o…

a person, object, or some other well-defined item upon which a…

serves as a baseline treatment that can be used to compare to…

an innocuous medication, such as a sugar tablet, that looks, t…

EXPERIMENT

a controlled study conducted to determine the effect varying o…

EXPERIMENTAL UNIT

a person, object, or some other well-defined item upon which a…

Why charts/graphs?

distribution

Dot plot

Stem and leaf plot

They effectively visually summarize data

describes values, frequencies, "shape" of data

A way to visually represent numerical data that is very time c…

Represents numerical data

Why charts/graphs?

They effectively visually summarize data

distribution

describes values, frequencies, "shape" of data