Four surgical procedures are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is considereda “clear” operation. In an aim to compare the proportion of clear operations for the four procedures (using a chi-square test), the heart center collects the below patient information from their own records.     Procedure     A B C D Total Clear 27 41 21 7 96 Return 11 15 9 11 46 Total 38 56 30 18 142   The expected frequency for the Procedure B/Clear cell is                  , and the expected frequency for the Procedure C/Return cell is                                        .       12.31 and 12.17       37.86 and 9.72       27.00 and 11.00     28.31 and 7.03

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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.