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(Data analysis Main branches, Concepts, Think of finding geo shape with…
Data analysis Main branches
Descriptive
Give an overview
Describe the data you have
Describe the data in hand
Give birth to descriptive stats
Inferential
Generalize finding
Point estimation
Interval estimation
Test hypotheses
Regression
Mutivariate
Branches
Classical inferences
General inference
Estimation
Hypothesis testing
Statistical modeling
Regression
Design of experiments
Bayseian inference
Concepts
Sampling
Think of finding geo shape with description
Summery measures
Shape
Association
Variabbility
Range
heavily effected by extreme
interquartile range
Middle 50%
spread the data around median
Variance & Standard variance
scattering around mean
Give more weight to extreme value
Central T
Central tendency
Arithmetic mean
Sum -> so effect by extreme
sensitive to outlies
Median
Divide 50
Order array: no effect from extremes
Not sensitive to outlies
if outliers are there select this
Mode:
most occurring
Population
Sample
Ex: sample is positive
Reaching back
to population
Ex: patient is positive