Many firms use on the job training to teach their employees computer programming. suppose you work in the personnel department of a firm that just finished training a group of its employees to programme, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. the mean and standard deviation of the test scores are 81 and 3, respectively, and the distribution of scores is bell shaped and symmetric. suppose the trainee in question received a score of 77. compute the trainee's z-score.

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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.