In a frequency distribution, what is the number of observations in a class called?
A. class midpoint
B. class interval
C. class array
D. class frequency
E. none of the above
Class Frequency
Interval
The number of observations in a class in a frequency distribution is called the class frequency.
Therefore, the correct answer is D. class frequency.
In a frequency distribution, the number of observations in a class is called the class frequency. The class frequency refers to the number of times a particular data point falls within a specific class or range. It provides information on how many data points are present in each class, helping us understand the distribution pattern of the data.
To determine the class frequency, you need to organize your data into class intervals or ranges. Each class interval represents a specific range of values. By counting the number of observations falling within each class interval, you can determine the class frequency.
Option D, class frequency, is the correct answer for this question.