Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 1 - No. 17)
When should the mean be used instead of the median?
When the data has outliers.
When the data is perfectly symmetrical.
When the data contains multiple modes.
When you want to find the middle value.
คำอธิบาย
When the data is symmetrical, the mean is a good representation of the center.