STATWORDS: INTRODUCTORY STATISTICS

Data and Variables

The resources below were chosen to align with the Clackamas Community College statistics curriculum.

Topic Web page Video Other

General Vocabulary

Population
STEPS Project, U of Glasgow

Sample
STEPS Project, U of Glasgow

Statistics and parameters (web page)
statisticshowto.com

Exploratory Data Analysis
US EPA website

Statistics and parameters (video)
statisticshowto.com

 

Types of Variables

Intro to variables
Scott Preston, SUNY-Oswego

Categorical (qualitative) variables versus quantitative variables
StatTrek

Univariate vs. bivariate data
StatTrek

   

Categorical Variables (aka Qualitative or Nominal Variables)

One-way frequency and relative frequency tables
StatTrek

Two-way tables (both frequency and relative frequency tables)
StatTrek

Excel video: Finding relative frequencies for one variable
brucesimmons.com

Excel video: Finding relative frequencies for a two-way table
brucesimmons.com

 

Graphs of Categorical Variables

Graphs for one categorical variable (web page)
StatTrek

Graphs for one categorical variable (video)
StatTrek

Excel video: Bar graphs for one variable
brucesimmons.com

Excel video: Bar graphs for a two-way table
brucesimmons.com

Interactive web page: Graphing categorical variables
onlinestatbook.com

Cartoon, xkcd.com

Quantitative Variables (aka Measurement Variables)

Describing distributions: center, spread, shape
StatTrek

Describing distributions: skewness and modality
StatTrek

Measuring central tendency
StatTrek

Central tendency concept
onlinestatbook.com

Calculating central tendency
onlinestatbook.com

Mean, median, mode
Khan Academy

Interactive web page: Central tendency and balance
onlinestatbook.com

Interactive web page: Exploring the mean and median
Khan Academy

Five-number summary and outliers

Quartiles
STEPS Project, U of Glasgow

Quartiles and the five-number summary
STEPS Project, U of Glasgow

Excel video: Calculating the five-number summary
brucesimmons.com

Testing for outliers using the Tukey test
brucesimmons.com

Calculator video: one-variable stats on a TI calculator
brucesimmons.com

Cartoon making fun of TI calculators, xkcd.com

Graphs of Quantitative Variables

Dotplot
StatTrek

Stemplot
StatTrek

Histogram
StatTrek

Boxplot
StatTrek

Comparing data sets with graphs
StatTrek

Dotplot
eHowEducation

Stemplot
onlinestatbook.com

Histogram
onlinestatbook.com

Boxplot
Khan Academy

Calculator video: Boxplots on a TI calculator
brucesimmons.com

Interactive web page: Matching histograms to verbal descriptions
University of Minnesota, Morris

Cartoon: Outlier
xkcd.com

Variability (aka Spread or Dispersion)

Range, IQR, variance, and standard deviation
StatTrek

 

Calculating sample variance and sample standard deviation
brucesimmons.com

Calculating population variance and standard deviation
Khan Academy

Range, variance, and standard deviation
Khan Academy

Interactive web page: Matching standard deviations to graphs
University of Minnesota, Morris

Interactive web page: Exploring standard deviation
Khan Academy

Resistance and Nonresistance of Statistics

   

Interactive web page: Is mean or median a better measure of center?
onlinestatbook.com

Interactive web page: Resistance of measures of center
Beth Chance, Cal Poly San Luis Obispo

Interactive web page: Resistance of measures of spread
Beth Chance, Cal Poly San Luis Obispo

Using the Standard Deviation

Meausring position: percentiles, quartiles, and z-scores
StatTrek

Empirical rule (aka 68-95-99.7 rule)
statisticshowto.com

Computing z-scores
Khan Academy

Excel video: Computing z-scores
brucesimmons.com

Empirical rule and the normal distribution
Khan Academy

More practice with the empirical rule and the normal distribution
Khan Academy

Interactive empirical rule
Beth Chance, Cal Poly San Luis Obispo

Interactive practice problems for the empirical rule
Khan Academy

Sample and Population Standard Deviation: A Detailed Look

Bias vs precision
STEPS Project, U of Glasgow

 

Interactive web page: Resistance of measures of spread
Beth Chance, Cal Poly San Luis Obispo

Topic Web page Video Other