Stats Starts Here
Your favorite music genre. The world language you study in high school. These are examples of ______ variables.
What is a categorical variable?
The area occupied by a part of a graph should be proportional to the magnitude of the value it represents
What is the area principle?
This display shows a dot along an axis for each case in the data
What is a dotplot?
In a histogram, one tail stretches out farther than the other one
What is skewed?
The difference between the upper quartile and lower quartile
What is the inter-quartile range?
The number of siblings you have. The number of colleges you apply to. These are examples of ______ variables.
What is a quantitative variable?
A type of table, which for the Titanic data shows both Ticket class and Survival
What is a contingency table?
The height of each bin of this display shows how many values belong in that bin
What is a histogram?
The value in a data set that is in the middle, with half the values below it and half above it
What is the median?
The minimum, first quartile, median, third quartile, and maximum
What is a 5-number summary?
In statistics, we use sample data in order to try to understand something about ______.
What is the population?
A plot similar to a segmented bar chart, but the width of each bar is proportional to the number of people in that category
What is a mosaic plot?
A histogram with two separated humps
What is bimodal?
The difference between the largest value and the smallest value
What is the range?
Good choice for the center of a skewed distribution
What is the median?
People who participate in an experiment
What are subjects or participants?
A random re-enactment of data collection under one or more assumptions
What is a simulation?
A histogram that can be folded along a vertical line through the middle, and the two sides almost match
What is symmetric?
Values that stand off away from the body of the distribution
What is an outlier?
A typical deviation from the mean
What is the standard deviation?
A rare problem in which unfair averaging over different groups leads to misleading conclusions
What is Simpson's Paradox?
In a contingency table, when the distribution of one variable is the same for all categories of another variable
What is independence?
A display that shows the individual values in a data set. If turned on its side, it resembles a histogram
What is a stem-and-leaf plot?
The median of the upper half of a data set
What is the third quartile?
A display that shows the 5-number summary
What is a boxplot?