Higher June 2024 Paper 3 Q3
3 Rick claims most of the flats in his 8-floor building are energy efficient.
He samples 45 flats from floors 1 to 5
Give a reason why this sample may not be useful in testing Rick’s claim. [1 mark]
| Answer | Mark | Comments |
|---|---|---|
| This is not representative of all flats or He didn’t take into account flats on the other floors | B1 | oe |
Additional guidance
| Ignore incorrect or irrelevant statements or incorrect values alongside a correct reason, unless contradictory | |
| Data is biased | B1 |
| Missing floor or Misses top 2 floors (ignore incorrect value) | B1 |
| There could be different results on the other 4 floors (ignore incorrect value) | B1 |
| Must have a flat from each floor, do another 27 (ignore irrelevant statement) | B1 |
| Only doing 5 out of the 8 floors | B1 |
| Not tested any on floor 7 or 8 | B1 |
| Missing most of the other floors (ignore ‘most of’ as irrelevant) | B1 |
| Some floors might be different to others | B1 |
| Sample all floors, sample size too small (ignore incorrect statement) | B1 |
| Needs to sample them all (all may refer to all flats not floors) | B0 |
| Sample too small | B0 |
| Some flats might be different to others | B0 |
| Didn’t test a third of the flats | B0 |