Fill in the blanks.
(i) The range of the data: 15, 4, 16, 20, 5, 6, 16, 8, 2, 1, 19, 0, is __P__.
(ii) Probability of an impossible event is __Q__.
(iii) The number of times a particular observation occurs in given data is called __R__.
(iv) In a single throw of two dice, the probability of getting a total of 11 is __S__.
| P | Q | R | S | |
|---|---|---|---|---|
| A | 18 | 1 | frequency | 1⁄12 |
| B | 20 | 0 | frequency | 1⁄18 |
| C | 19 | 0 | class mark | 1⁄9 |
| D | 20 | 1 | raw data | 1⁄18 |