In this article we will discuss about Median:- 1. Meaning of Median 2. Methods of Determining Median 3. Merits 4. Demerits. Meaning of Median: When the values of all items of a series are arranged in increasing (ascending) or decreasing (descending) order it is usually called an array and the middle item of an array is called median. The median [...]
In this article we will discuss about meaning and methods of calculation of Standard Deviation. Meaning of Standard Deviation: The best and most important measure of dispersion is standard deviation which was first worked out by Karl Pearson (1833). It is the positive square root of mean of deviations of individual values of a data series from the arithmetic mean [...]
In this article we will discuss about Correlation in Statistics:- 1. Subject-Matter of Correlation 2. Types of Correlation 3. Methods. Subject-Matter of Correlation: Sometimes two or more events are interrelated, i.e., any change in an event may affect the other events. If such changes are expressed in the form of numerical data and they appear to be interdependent they are [...]