Types of Data
This type of variable takes numerical values for quantities
What is a quantitative variable?
Two graphs that show every individual value
What is a dotplot and stemplot?
The 4 main features to describe a distribution
What is Shape, Outliers, Center & Spread?
(remember context and comparative language!)
This measure represents the average value of a dataset
What is the mean?
This lets us know how much a value typically varies from the mean
What is standard deviation?
This type of variable place individuals into different groups
What is a categorical variable?
This is commonly used to easily display quantitative data distributions
What is a histogram?
A distribution with a longer tail on the left is described as
What is skewed left?
This measure is the middle value of the first half of your dataset
What is Quartile 1 ?
A study in which you follow a cohort over a specified time
What is a prospective study?
Asking students for their favorite sports team is this type of study.
What is a survey?
The 5-number summary can be easily estimated from this display
What is a boxplot?
A perfectly balanced distribution with even tails on the left and right
What is symmetric?
This measure of spread is the easiest to calculate given any graph
What is the range?
Recording information from an entire population
What is a census?
Height measured in inches is an example of this kind of quantitative variable
what is continuous data?
A perfect way to organize two categorical variables
what is a two-way table or contingency table?
A distribution whose median is greater than its mean
What is skewed left?
A resistant measure of center and spread
What is median and IQR?
When knowing the value of one variable helps predict the other
What is an association?
The number of siblings a student has is this kind of quantitative variable
what is discrete data?
A graph that is proportional to its group(s) size(s)
What is a mosaic plot?
When all data values are equally spread across intervals
What is uniform?
The mean is pulled in the direction of these values for asymmetric distributions
What are outliers/extreme values?
A graph that is proportional to its group(s) size(s)
What is a mosaic plot?