Krishna
0

Step 1: Find the mean of the given numbers

              GIVEN: 73, 66, 26, 64, 26, 17, 95, 65


                            Mean = \frac{\text{ Sum of the variables}}{\text{Total number of variables}}


                            Add up the numbers

                                73 + 66 + 26 + 64 + 26 + 17 + 95 + 65 =  432


                              There 8 numbers


                      Therefore, Mean = \frac{432}{8}


                               Original mean = 54


Step 2: Find the mean after adding the additional number

              73, 66, 26, 64, 26, 17, 95, 65, 36


                    Add up the numbers

                                73 + 66 + 26 + 64 + 26 + 17 + 95 + 65 + 36 =  468


                          There 9 numbers


                         Therefore, Mean = \frac{468}{9}


                                        Mean =  52


              Hence, after adding the  additional number the mean is decreased