Krishna
0

Step 1:  Recall the definition of quartile

               DEFINITION: Quartile is median.

                 Two types: 1) Upper quartile

                                   2) Lower quartile

             Upper quartile:

                  The upper quartile is the median of the higher half of the data.    

             Lower quartile:

                   The lower quartile is the median of the lower half of the data.


Step 2: Arrange the numbers from least to greatest.

               GIVEN: 16, 41, 63, 67, 82, 90


              least to greatest.

                 16, 41, 63, 67, 82, 90


Step 3: Separate the numbers into a lower half and an upper half.

                        16, 41, 63, 67, 82, 90

                Lower half: 16, 41, 63

                Upper half:  67, 82, 90


Step 4: Find the upper quartile in the upper half

              Upper quartile in the middle of the upper half.

                           67 82 90


                   The upper quartile is 82.