Lecture-04

What does a cumulative frequency distribution represent?

• The total number of observations

• The number of values below the upper boundary of each class

• The number of values in each class

• The percentage of values in each class

In a histogram, the bars represent the frequency of which element?

• Categories

• Variables

• Classes

• Class midpoints

What is the primary advantage of relative-frequency histograms over frequency histograms?

• Easier to construct

• Direct comparison of multiple data sets

• They use class marks for labeling

• They display percent values only

What does an ogive plot typically represent?

• Frequency of classes

• Cumulative relative frequency

• Trends over time

• Distribution of discrete data

Which plot is most useful for visualizing moderate amounts of discrete data?

• Stem and Leaf Diagram

• Dot Plot

• Histogram

• Line Plot

In a stem-and-leaf diagram, what does the "stem" represent?

• The last digit of a number

• The largest value in a data set

• All but the rightmost digit of a number

• The total number of observations