If a fair coin is tossed 25 times, the probability distribution for the number of heads, X, is given below. Find the mean and the standard deviation of the probability distribution using Excel. Enter the mean and round the standard deviation to two decimal places. x P(x) 0 0 1 0 2 0 3 0.0001 4 0.0004 5 0.0016 6 0.0053 7 0.0143 8 0.0322 9 0.0609 10 0.0974 11 0.1328 12 0.155 13 0.155 14 0.1328 15 0.0974 16 0.0609 17 0.0322 18 0.0143 19 0.0053 20 0.0016 21 0.0004 22 0.0001 23 0 24 0 25 0

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.