Glossary
Frequency Table
A table that displays categories of data along with the count of observations falling into each category. It helps organize raw data by showing how often each value or category appears.
Example:
A teacher recorded the number of students who scored A, B, C, D, or F on a test. A frequency table would show that 10 students got an A, 15 got a B, etc.
Percentage
The relative frequency expressed as a value out of one hundred, obtained by multiplying the relative frequency by 100. It provides an easily understandable way to represent proportions.
Example:
If the relative frequency of students who walk to school is 0.35, then the percentage of students who walk is 0.35 * 100 = 35%.
Relative Frequency
The proportion of times a specific category or value appears in a dataset, calculated by dividing the frequency of that category by the total number of observations.
Example:
If 20 out of 100 surveyed students prefer pizza, the relative frequency of pizza preference is 20/100 = 0.20.
Relative Frequency Table
A table that lists each category of data along with its corresponding relative frequency or percentage. It provides a clear view of the proportion of observations within each category.
Example:
After surveying favorite colors, a relative frequency table might show that blue accounts for 30% of responses, green for 25%, and so on, making it easy to see the most popular color proportionally.