Luis's scores for 4 quizzes are shown in the table. Find this average score.
Quizzes | 1st | 2nd | 3rd | 4th |
Scores | 19 | 9 | 1 | 1 |
Quizzes | 1st | 2nd | 3rd | 4th |
Scores | 19 | 9 | 1 | 1 |
Quizzes | 1st | 2nd | 3rd | 4th |
Scores | 19 | 9 | 1 | 1 |
Quizzes | 1st | 2nd | 3rd | 4th |
Scores | 19 | 9 | 1 | 1 |
Quizzes | 1st | 2nd | 3rd | 4th |
Scores | 19 | 9 | 1 | 1 |