Understanding Frequency Data in Behavioral Health and Education Frequency is one of the simplest and most powerful concepts in behavioral health, education, and basic statistics. It refers to how many times something occurs. Frequency is the number of times something occurs for instance; the number of times a student raises their hand in class. Because frequency is so fundamental, it shows up everywhere: in classrooms, therapy sessions, behavioral observations, and test score analysis. Once you understand how to record and visualize frequency, you gain a clearer picture of patterns, habits, and performance. Learn more statistics in the student and professor recommended Applied Statistics. Recording Frequencies Frequencies can be captured in several simple ways: Tally marks on paper Counts entered into a spreadsheet Tables that list an item and how often it occurs Here's a simple table showing the frequency of four scores Frequency Table Visualizing Frequency Data Visual disp...
The Range is the difference between the highest and lowest values in a set of data. In this post: The Range The Interquartile Range Semi Interquartile Range Max and Min Values Cite this post Sutton, G. W. (2026, August 6). Range in statistics. Assessment, Statistics, and Research . https://statistics.suttong.com/2026/08/range-in-statistics.html In statistics, the Range is represented by the letter "R", the highest value is the Maximum abbreviated as Max and the smallest value is the Minimum abbreviated as Min. To calculate the range, subtract Min from Max. R = Max - Min Example: Rating Scale Data Set: 2,3,4,5,7 R = 7 - 2. R = 5 Using the Range The range is used in conjunction with the median (Mdn), Max and Min to describe basic characteristics of a set of values. The range is a rough index of the spread of values in a data set. Statisticians refer to the spread as dispersion thus, the range is a measure of dispersion. The Median and the Range...