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Raw data is often large and confusing. Before applying averages or other statistical measures, data must be organized. Classification groups data into meaningful categories, and tabulation presents data systematically in tables. A frequency distribution shows how many observations fall into each class interval and forms the base for graphs like histogram and ogive. This topic explains classification, tabulation and frequency distribution with clear steps and formats used in exams.
Classification is the process of arranging data into homogeneous groups (classes) according to common characteristics.
Objectives:
Tabulation is the systematic presentation of classified data in a table form with rows and columns for easy understanding and comparison.
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Raw data is often large and confusing. Before applying averages or other statistical measures, data must be organized. Classification groups data into meaningful categories, and tabulation presents data systematically in tables. A frequency distribution shows how many observations fall into each class interval and forms the base for graphs like histogram and ogive. This topic explains classification, tabulation and frequency distribution with clear steps and formats used in exams.
Classification is the process of arranging data into homogeneous groups (classes) according to common characteristics.
Objectives:
Tabulation is the systematic presentation of classified data in a table form with rows and columns for easy understanding and comparison.
A frequency distribution is a table that shows the number of observations (frequency) falling within each class interval.
After tabulation, data can be shown using:
From this topic
Objectives of classification include:
(Any three objectives can be written.)
Types of classification include:
(Any three types can be written.)
Classification and tabulation are basic steps used to organize raw data.
Classification is the process of arranging data into homogeneous groups (classes) based on common characteristics. It simplifies raw data, makes comparisons possible and prepares data for further analysis.
Tabulation is the systematic presentation of classified data in a table form using rows and columns. Tabulation makes data easy to understand, compare and interpret.
Parts of a statistical table are:
Thus, classification groups data and tabulation presents it clearly, forming the foundation for further statistical calculations and graphs.