The data set is 10, 20, 30, 40, 50. The coefficient of variation (CV = SD/Mean x 100) is: Mean=30, Variance=200, SD=√200=14.14, CV=14.14/30 x 100 = 47.14%
Q1. The data set is 10, 20, 30, 40, 50. The coefficient of variation (CV = SD/Mean x 100) is: Mean=30, Variance=200, SD=√200=14.14, CV=14.14/30 x 100 = 47.14%
Answer: 47.14%
Explanation: Mean=30, variance=[(10-30)²+(20-30)²+(30-30)²+(40-30)²+(50-30)²]/5=200, SD=√200≈14.14, CV=14.14/30×100≈47.14%. 47.14% is correct because it matches what the question requires. Show the calculation clearly when solving similar quantitative items.