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STATISTICS - Coggle Diagram
STATISTICS
Intro
Definition
Types of data
Grouped
Ungrouped
Measures of Central tendency
Types
Median
Def
Ungrouped data
Grouped data
Discrete frequency
Continous frequency
Mode
def
ungrouped
grouped
Mean
AM
Grouped data
Discrete frequency
Continuous frequency
Mean of ungrouped data
Shortcut method
(x̄) = A + (∑di /n)
where ; d = xi - A
x̄ = Σx / n
Combined mean
GM
HM
Relation between mean, mode and median
Distribution on graph
Symmetric
Mean median and mode coinicde
Assymetric/Skewed
Positive/skewed to right
Negative/skewed to left
Mode = 3 Median - 2 Mean
Measurses of dispersion (spread of data)
Def
Types
Range
Mean deviation
Ungoruped data
Grouped data
Variance
Square devivation
Standard deviation