| Date | November 2015 | Marks available | 1 | Reference code | 15N.1.SL.TZ0.1 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 1 | Adapted from | N/A |
Question
Two populations of the same fish species were fed different diets to investigate the effect of differing nutrition on their growth. What is an appropriate method to determine the significance of a resulting difference?
A. Calculate the mean for each population
B. Calculate the standard deviation for each population
C. Graph the results
D. Perform a t-test
Markscheme
D
Examiners report
[N/A]
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