2025 SJI PRELIMS P1 Q14

2025 SJI PRELIMS P1 Q14

Secondary 4
3 marks

Set A: 60, 60, 60, 60, 60. Set B: 50, 55, 60, 65, 70.

  1. Without calculation, explain which set has the larger standard deviation.[2]
  2. Set C has standard deviation 7. Every value is increased by 10, then multiplied by 2. Find the new standard deviation.[1]

Solution:

Solution locked

Sign in to view the step-by-step solution

Similar questions are unavailable for this question.
Answer:(a) Set B (b) \(14\)

Need help? Join our JC Math tuition classes.

Learn more