Description of the variables
  1. FLOSS
    1. Never
    2. Once/Month
    3. A few times/Month
    4. Once/Week
    5. A few times/Week
    6. Once/Day
    7. More than once/Day
  2. BRUSH
    1. Never
    2. Once/Month
    3. A few times/Month
    4. Once/Week
    5. A few times/Week
    6. Once/Day
    7. More than once/Day
The data are given next

    FLOSS   1     2   3    4    5    6    7
BRUSH  +=====================================+
   1   |   115    0    1    1    1    2    0 |
   2   |    13    0    0    2    0    1    0 |
   3   |    23    1    0    0    0    0    2 |
   4   |    33    2    1    4    1    2    0 |
   5   |   110    9    5    7   13    2    2 |
   6   |   549   41   46   78  107  103   16 |
   7   |   733   94  126  196  342  544  282 |
       +=====================================+