Individuals and Variables
The objects described by a data set are called these.
What are individuals?
Best graph for categorical data.
What is a bar graph?
Total for one row or column.
What is a marginal frequency?
Graph using dots for each observation.
What is a dotplot?
Average of data values.
What is the mean?
Rule used to identify outliers.
What is 1.5 × IQR rule?
Distribution balanced on both sides.
What is symmetric?
Type of variable describing favorite music genre.
What is categorical?
Bars touching in a categorical graph indicates this mistake.
What is confusing with a histogram?
Value inside the table intersection.
What is a joint frequency?
Graph using class intervals.
What is a histogram?
Middle value of ordered data.
What is the median?
Q3 − Q1 equals this.
What is IQR?
Distribution with long right tail.
What is right-skewed?
Type of variable measuring weekly earnings.
What is quantitative?
A graph starting at 50 instead of 0 may do this.
What is mislead/exaggerate differences?
Used to determine association between variables.
What is a two-way table?
Distribution with long right tail.
What is right skewed?
Measure resistant to outliers.
What is the median?
Five-number summary includes these.
What are min, Q1, median, Q3, max?
Distribution with long left tail.
What is left-skewed?
Identify the individuals: A survey records grade level and lunch choice for students.
Who are students?
Comparing job type by grade requires this display.
What is a two-way table?
If proportions differ greatly between groups, variables are likely this.
What is associated?
Distribution balanced on both sides.
What is symmetric?
Measures typical distance from the mean.
What is standard deviation?
Skewed right distributions typically have mean ___ median.
What is greater than?
Four features used to describe distributions.
What are shape, center, variability, and outliers?
A variable measuring number of hours studied is this type.
What is quantitative?
Graph used to compare categorical distributions across groups.
What is a segmented or side-by-side bar graph?
If proportions are similar across groups.
What is no association?
Extreme value far from others.
What is an outlier?
Middle 50% of data spread.
What is the IQR?
Boxplot feature showing center.
What is the median line?
Extreme value far from the rest of the data.
What is an outlier?