alleryThe sum of the deviations of all observations from their arithmetic mean is always
Aone
Bthe mean
Czero
Dthe range
Answer & Solution
Correct answer: C. zero
Values above the mean are exactly balanced by those below it, so deviations add up to zero.
Keep practising Arithmetic Mean
Browse all Arithmetic Mean questions for SSC CGL, or explore more Quantitative Aptitude topics.
Related questions
Which average is described as the middle value after sorting?A weighted mean differs from a simple mean because some valuesPer capita income of a nation is an example of which statistic?The mode of a data set is the value thatIn a moderately skewed unimodal distribution, the median usually liesFor data in an arithmetic progression, the relation between mean and median is thatThe mean of any sample always liesFor an even number of ordered observations, the median is