Mean By Direct Method. E learning is the future today. Mean or average of observations as we know is the sum of the values of all the observations divided by the total number of observations.
There are three methods to find the mean for grouped data depending on the size of the data. It was established in germany and france around 1900. A method of teaching a language through conversation discussion and reading in the language itself without translation and without the study of formal grammar.
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Here we are going to see how to find arithmetic mean by direct method. Suppose x 1 x 2 x 3 x n be n observations with respective frequencies f 1 f 2 f 3 f n. Find arithmetic mean by direct method. It was established in germany and france around 1900.
