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  數(shù)量分析學習技巧
  Aim: Sample Population Estimation&Forecast
  Statistics: Descriptive Statistics & Inferential Statistics
  1, Descriptive Statistics
  1.1, Central Tendency
  Mode
  Median
  Mean: arithmetic mean, geometric mean, weighted mean
  1.2, Dispersion & Relative Dispersion
  Range
  MAD(mean absolute deviation)
  Variance--risk
  1.3, Symmetry--skewness
  1.4, Kurtosis
  2, Inferential Statistics
  2.0, Probability Concept--An excellent mathematic tool for Statistics
  l Conditional, unconditional, joint probability, Addition Rule, Independent Events
  l Probability Distribution & Probability Function
  Binomial Distribution
  Uniform Distribution
  Normal Distribution
  Lognormal Distribution
  2.1 Estimation With Confidence --The development of descriptive statistics
  z-statistic, t-statistic, -statistic
  2.2 Hypothesis Testing
  --A test of validity of financial assertion with the help of probability distribution
  2.3 Forecasting
  2.4 The Estimation & Forecast Between Variables
  CFA level I focus on the estimation and forecast of linear regression
  3, Extension in Finance
  Case A, arithmetic mean, geometric mean
  dilemma of return
  100----200-----100 first year:100% second year:-50%
  compute 1:
  compute 2:
  Case B, Normal Distribution vs. Lognormal Distribution
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