Merits and Demerits of Median

 

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Arithmetic Mean example (Ungrouped data)

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  Let's go through an example to illustrate the calculation of the arithmetic mean:   Suppose we have the following dataset of exam scores for a class of students:   {85, 90, 95, 78, 69, 55}   To find the arithmetic mean, we add up all the scores and then divide by the total number of scores: Therefore, the arithmetic mean of the exam scores is 79 (approx.). This means that, on average, the students scored 79 points on the exam.
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Key Concept of Statistics - Presentation of data

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As soon as data collection is done, we need to find a way to present the data in most meaningful, efficient way such as tables, text, graphs, charts, tren ds etc.  Presentation of data is the easiest way of  presenting the  results of findings from collected data using appropriate data analysis techniques or tools. Data presentation is powerful tool which makes data understandable & readable at the same time while attracting & keeping the interest of its readers and effectively showcase large amounts of complex data in a simplified manner. Data can be presented in a variety of formats, including: Tables: Tables are a simple and effective way to present data. They are particularly useful for presenting precise numer ical data. Graphs and Charts: Graphs and charts are often used when it’s helpful to visualize trends, comparisons, or relationships in the data. This includes bar graphs, line graphs, pie charts, scatter plots, and more. Maps: For data with ...
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