1MA0 Foundation November 2013 Paper 2 Q14
14 Vicky counts the number of birds in her garden at 8 am on each of 10 days.
5 3 3 2 0 2 4 2 4 15
(a) Write down the mode. (1)
(b) Work out the mean. (2)
Vicky counts the number of birds in her garden at 5 pm on each of 20 days.
She records the information in a frequency table.
| Number of birds | Frequency |
|---|---|
| 0 | 3 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 3 |
(c) Work out the total number of birds Vicky records in the frequency table. (2)
| Answer | Mark | Notes |
|---|---|---|
| 2 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 4 | 2 | M1 for showing a clear intention to add all ten numbers and to divide by 10 A1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 55 | 2 | M1 for evidence of at least 4 attempts to multiply number of birds by frequency eg. 0×3, 2×1, 3×2, 4×3, 5×4, 3×5 A1 cao |