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shaalaa.com | Measures of Central Tendency
Statistics – basic concepts, , Histograms and Ogive, Mean, Median, Mode.
(a) Graphical Representation. Histograms and ogives.
Finding the mode from the histogram, the upper quartile, lower Quartile and median from the ogive.
Calculation of inter Quartile range.
(b) Computation of:
Measures of Central Tendency: Mean, median, mode for raw and arrayed data. Mean*, median class and modal class for grouped data. (both continuous and discontinuous).