![]() ![]() ![]() For example, in the stock market, how the stock price is volatile in nature. Standard Deviation is one of the important statistical tools which shows how the data is spread out. As we know that standard deviation is a calculation of how the values are changing with comparison or the respect of the mean or the average value, we represent this data in a graph, there are two deviations represented in graph of standard deviation, one which are positive to the mean which is shown on the right hand side of the graph and another is negative to the mean which are shown on the left hand side of the graph, the standard deviation graph is also known as bell curve graph in excel.
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