Suppose we are interested in the number of the tail that will appear on a simultaneous tossing of three coins.  List all the possible outcomes.  Create a probability distribution for the number of tails. (Use the table on the  right.)  What is the expected number of tails? d. Compute the standard deviation of the number of tails.     (number of tails)    (probability) 0   1   2   3

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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.