context
data
data table
case
sample
variable
units
categorical variable
quantitative variable
frequency table
distribution
area principle
bar chart
pie chart
contingency table
marginal distribution
conditional distribution
independence
gap
a region of the distribution where there are no values
stem-and-leaf display
shows quantitative data values in a way that sketches the distribution of the data
dotplot
graphs a dot for each case against a single axis
shape
center
spread
mode
unimodal
uniform
symmetric
tails
skewed
outliers
median
range
the difference between the lowest and highest values in a data set
quartile
interquartile range (IQR)
percentile
5-number summary
mean
found by summing all the data values and dividing by the count
resistant
variance
the sum of squared deviations from the mean, divided by the count minus 1
standard deviation
bimodal
multimodal
boxplot
comparing boxplots
timeplot
standardizing
parameter
statistic
z-score