Justin's scores for 6 tests are shown in the table. Find this average score.
Tests | 1st | 2nd | 3rd | 4th | 5th | 6th |
Scores | 12 | 4 | 15 | 19 | 7 | 15 |
Tests | 1st | 2nd | 3rd | 4th | 5th | 6th |
Scores | 12 | 4 | 15 | 19 | 7 | 15 |
Tests | 1st | 2nd | 3rd | 4th | 5th | 6th |
Scores | 12 | 4 | 15 | 19 | 7 | 15 |
Tests | 1st | 2nd | 3rd | 4th | 5th | 6th |
Scores | 12 | 4 | 15 | 19 | 7 | 15 |
Tests | 1st | 2nd | 3rd | 4th | 5th | 6th |
Scores | 12 | 4 | 15 | 19 | 7 | 15 |