Section 2.4 Flashcards
One quantitative variable(continued) Formal rule for outliers Boxplots One quantitative and one categorical variable: Side-by-Side boxplots Statistics by group Difference in means (4 cards)
1
Q
Boxplot
A
A graphical display of the five number summary for a single quantitative variable. It shows the distribution, identifies the middle 50% of the data, and highlights any outliers.
2
Q
IQR Method of Detecting Outliers
A
Smaller then Q1 - 1.5 (IQR)
Larger then Q3 + 1.5 (IQR)
3
Q
Visualizing a Relationship between Quantitative & Categorial Varaibles
A
Side-by-side graphs are used to visualize the relationship between a quantitative & categorial variable.
4
Q
Difference in Means
A
When comparing a Quantitative variable across two categories, and compute the difference of means
x-bar 1 - xbar 2
