# Study sets matching "statistics"

x bar (mean)

sigma squared (variance)

standard deviation

x Tilde (median)

average mean... F · MP... F

standard deviation squared

the square root of the variance

number in the middle of a set (if 2, then you get the 2 middle…

x bar (mean)

average mean... F · MP... F

sigma squared (variance)

standard deviation squared

validity

outlier

Common Shapes of Distributions

What 2 statistical measures describe th…

the extent to which evidence supports the intended inferences…

an observed value that is notably distinct from the other valu…

Symmetric... Skewed to the right... Skewed to the left... Bell-shaped

mean... median

validity

the extent to which evidence supports the intended inferences…

outlier

an observed value that is notably distinct from the other valu…

statistics

histogram

percentile

distribution

Statistics is the study of the collection, analysis, interpret…

a statistical graph that represents the frequency of values of…

A percentile is one of the equal divisions of an amount, expre…

The distribution of things involves giving or delivering them…

statistics

Statistics is the study of the collection, analysis, interpret…

histogram

a statistical graph that represents the frequency of values of…

Arcsine Transform

Average Deviation

Bimodal Frequency Distribution

Central Tendency

When the data are proportions it is usually recommended that t…

The average deviation, or the mean absolute deviation, measure…

A bimodal distribution is like a combination of two normal dis…

In statistics, a central tendency (or more commonly, a measure…

Arcsine Transform

When the data are proportions it is usually recommended that t…

Average Deviation

The average deviation, or the mean absolute deviation, measure…

Individuals

Variable

Quantitative

Categorical

Objects for which we collect data. People, Animals, Things are…

A characteristic of an individual. The characteristics can be…

A ... variable is one that takes on numerical values where it…

A ... variable is one that places an individual in a group.

Individuals

Objects for which we collect data. People, Animals, Things are…

Variable

A characteristic of an individual. The characteristics can be…

Individuals

Variable

Quantitative

Categorical

Objects for which we collect data. People, Animals, Things are…

A characteristic of an individual. The characteristics can be…

A ... variable is one that takes on numerical values where it…

A ... variable is one that places an individual in a group.

Individuals

Objects for which we collect data. People, Animals, Things are…

Variable

A characteristic of an individual. The characteristics can be…

Biased

Biased

Observational

Sample

Data or question that favors a particular outcome

Data or question that favors a particular outcome

Researcher just takes measurements and gathers data

Smaller portion of population that represents population

Biased

Data or question that favors a particular outcome

Biased

Data or question that favors a particular outcome

Dot Plot

Range

Quartiles

Five Number Summary

a graphical display of data using dots

the difference between the lowest and highest value

the values that divide a list of numbers into quarters

a set of data showing the Minimum, 1st Quartile, Median, 3rd Q…

Dot Plot

a graphical display of data using dots

Range

the difference between the lowest and highest value

Working with charts and diagrams, alway…

Grouping data is good because,

Grouping data is not so good because,

Median is

Check the scale

it is easier to collect the data

you lose accuracy and can only estimate your statistics.

the middle number in a set once it is in order

Working with charts and diagrams, alway…

Check the scale

Grouping data is good because,

it is easier to collect the data

Mean

Median

Mode

Statistics

The average of the data points. ... Add all the data points; divi…

The middle point.... List all the data points in numerical order;…

The number seen the most.... Look at list, count how many times t…

using data to answer questions; not yes/no or single answer qu…

Mean

The average of the data points. ... Add all the data points; divi…

Median

The middle point.... List all the data points in numerical order;…

Box and Whisker Plot

Line Plot

Frequency

Frequency Table

A diagram that summarizes data using the mean, the upper and l…

A statistical chart consisting of data points on a number line.

The number of times an item, number, or event occurs.

The organization of data in table form with tallies and freque…

Box and Whisker Plot

A diagram that summarizes data using the mean, the upper and l…

Line Plot

A statistical chart consisting of data points on a number line.

Arcsine Transform

Average Deviation

Bimodal Frequency Distribution

Central Tendency

When the data are proportions it is usually recommended that t…

the mean absolute deviation that measures the absolute differe…

A combination of two normal distributions -there are two peaks…

In statistics, a __________________ (or more commonly, a measu…

Arcsine Transform

When the data are proportions it is usually recommended that t…

Average Deviation

the mean absolute deviation that measures the absolute differe…

Statistics

Statistical question

Sample size

Data

Science of collecting, organizing, representing, and explainin…

A question that may have many answers

Number of people asked a statistical question

Information often in number form and usually organized

Statistics

Science of collecting, organizing, representing, and explainin…

Statistical question

A question that may have many answers

Quartile

Symmetric

IQR

Skew

Refers to 1/4 of the data points

Data Distribution that shows mirror image of left and right si…

The distance between the first and third quartiles

One side of the distribution being more elongated than the oth…

Quartile

Refers to 1/4 of the data points

Symmetric

Data Distribution that shows mirror image of left and right si…

Bimodal Frequency Distribution

Central Tendency

Degree of Freedom

Dispersion

A combination of two normal distributions -there are two peaks…

In statistics, a __________________ (or more commonly, a measu…

In trying to measure variance we have to keep in mind that our…

We usually want to also know how closely clustered the data ar…

Bimodal Frequency Distribution

A combination of two normal distributions -there are two peaks…

Central Tendency

In statistics, a __________________ (or more commonly, a measu…

parametric

non parametric

what is ordinal data

student t test

參數... continuous numerical data... from normally distributed populat…

Ordinal data... nominal data... Interval data ... not normally distribu…

顺序

- parametric test... - samples from normally distributed populati…

parametric

參數... continuous numerical data... from normally distributed populat…

non parametric

Ordinal data... nominal data... Interval data ... not normally distribu…

Ways to Gain Information

Empiricism

Faith/Intuition

Tenacity

Empiricism, Faith/Intuition, Tenacity, Authority, Observe, Tra…

Research Based

Gut, No Source, Can not separate accurate v. inaccurate

Superstitions, "Lucky Charm"

Ways to Gain Information

Empiricism, Faith/Intuition, Tenacity, Authority, Observe, Tra…

Empiricism

Research Based

data

statistics

population

sample

consist of information coming from observations, counts, measu…

the science of collection, organizing, analyzing, and interpre…

collection of all outcomes, responses, measurements, or counts…

a subset, or part, of a population

data

consist of information coming from observations, counts, measu…

statistics

the science of collection, organizing, analyzing, and interpre…

Inferential Statistics

Descriptive Statistics

bar graphs

pie graphs

Hypothesis Testing, Applying probability, discovering correlat…

Frequency Distributions, Graphing and Charting Data, Measures…

Inferential Statistics

Hypothesis Testing, Applying probability, discovering correlat…

Descriptive Statistics

Frequency Distributions, Graphing and Charting Data, Measures…

Range

Standard Deviation

Deviation

Population variance

the distance covered by the scores in a distribution, from the…

he standard deviation provides a measure of the standard, or a…

distance from the mean:

equals the mean squared deviation. Variance is the average squ…

Range

the distance covered by the scores in a distribution, from the…

Standard Deviation

he standard deviation provides a measure of the standard, or a…

Disjoint Events (Definition)

Disjoint Events Test Formulas

Independent Events (Definition)

Independent Events test formulas

Events (A) and (B) are disjoint or mutually exclusive if they…

P (A and B) = 0... P (A or B) = P(A) + P(B)

Two events are independent if the outcome of one does not chan…

P(A | B) = P(A)... P(A and B) = P(A) *P(B)

Disjoint Events (Definition)

Events (A) and (B) are disjoint or mutually exclusive if they…

Disjoint Events Test Formulas

P (A and B) = 0... P (A or B) = P(A) + P(B)

Nominal

Ordinal

Interval

Ratio

categorical- male/female, political party, types of living acc…

Order, rank, uneven spacing-1st, 2nd, 3rd, 4th; bad, medium, g…

equal intervals between units and ordered but no meaningful ze…

Zero value possible. Age, weight, height, ruler measurement, #…

Nominal

categorical- male/female, political party, types of living acc…

Ordinal

Order, rank, uneven spacing-1st, 2nd, 3rd, 4th; bad, medium, g…

Ways to Gain Information

Empiricism

Faith/Intuition

Tenacity

Empiricism, Faith/Intuition, Tenacity, Authority, Observe, Tra…

Research Based

Gut, No Source, Can not separate accurate v. inaccurate

Superstitions, "Lucky Charm"

Ways to Gain Information

Empiricism, Faith/Intuition, Tenacity, Authority, Observe, Tra…

Empiricism

Research Based

univariate analysis

bivariate analysis

data

qualitative

analysis of research data that examines just one variable

analysis of research data that examines two variables

Facts and statistics collected together for reference or analy…

Data in the form of words

univariate analysis

analysis of research data that examines just one variable

bivariate analysis

analysis of research data that examines two variables