The mean deviation about mean of the values 18, 12, 15 is :A6B0C3D2Answer: D. 2 Read Explanation: MD about mean = ∑|xi - 𝑥̄|/n𝑥̄ = (18 + 12 +15)/3= 15xi|xi - 𝑥̄|183123150Total6MD = 6/3 = 2 Read more in App