The following points highlight the three types of measures of central tendency. The types are: 1. Mean 2. Median 3. Mode Type # 1. Mean: It is also known as arithmetic mean. It is the ordinary average in Arithmetic. According to Garrett, "The arithmetic mean, or more simply the mean, is the sum of the separate scores or measures divided [...]
In this article we will discuss about the calculation of Mean Deviation (MD). (MD or AD) The average value of the different deviations from the mean is a more accurate measure of variability. It is designated as Mean Deviation (MD) or Average Deviation (AD) or Mean Variation (MV). According to Garett, "The average deviation or AD (also written mean deviation [...]
In this article we will discuss about the Importance of Statistics in Education. Definitions of Statistics: "Statistics comprises the collection, tabulation, presentation and analysis of an aggregate of the facts, collected in methodical manner, without bias and related to predetermined purpose." - Sutcliffe The word "statistics" is derived from the Latin word "status", which means political condition or status. Hence, [...]
