Find the mean of: 10, 12, 15, 18, 20
Q1. Find the mean of: 10, 12, 15, 18, 20
Answer: 15
Explanation: Mean = (10+12+15+18+20)/5 = 75/5 = 15. 15 is correct because it matches what the question requires. Show the calculation clearly when solving similar quantitative items.