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The standard deviation is calculated by multiplying the square of its deviation by its probability. (Each deviation has the format x - ). Now adding

The standard deviation is calculated by multiplying the square of its deviation by its probability. (Each deviation has the format x - ). Now adding the values from the fourth column of the table. 0.708588 + 0.368082 + 0.05547 + 0.048735 + 0.24649 + 0.66049 + 0.637245 = 2.7251 The standard deviation is the square root of the sum = 2.7251 = 1.65078 is this correct

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