Question

X-5 15 25 35 45 55. D=X-A - 20 - 10 0 10 20 30 assumed mean method of calculating mean. A=25 assumed mean
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Answer 1

Step-by-step explanation:

statistics, the assumed mean method is used to calculate mean or arithmetic mean of a grouped data. If the given data is large, then this method is recommended rather than a direct method for calculating mean. This method helps in reducing the calculations and results in small numerical values. This method depends on estimating the mean and rounding to an easy value to calculate with. Again this value is subtracted from all the sample values. When the samples are converted into equal size ranges or class intervals, a central class is chosen and the computations are performed.