Q. Select the outlier in the data set.12,22,36,47,61,69,77,828
Calculate mean: Calculate the mean of the data set: (12+22+36+47+61+69+77+828)/8=1153/8=144.125.
Calculate deviations: Calculate the deviations from the mean for each data point: ∣12−144.125∣ext,∣22−144.125∣ext,∣36−144.125∣ext,∣47−144.125∣ext,∣61−144.125∣ext,∣69−144.125∣ext,∣77−144.125∣ext,∣828−144.125∣.
Identify largest deviation: Identify the largest deviation: The deviations are 132.125, 122.125, 108.125, 97.125, 83.125, 75.125, 67.125, 683.875. The largest deviation is 683.875, which corresponds to the data point 828.
Conclude outlier: Conclude that 828 is the outlier since it has the largest deviation from the mean by a significant margin.