原创 重學Statistics, Cha4 Introduction to Probability
這一章學什麼? 1.學了 Combination,Permutations,還有一些計算probability的方法,和conditional probability 2. 最重要的是Bayesian theorem,怎麼算conditi
原创 重學statistics,Cha3 Descriptive Statistics: numerical measures
這一章學什麼? 1. 一些很簡單的統計數據:Mean, Median, Mode, Percentiles, Variance, Standard Deviation 2. 用數據描述圖形的形狀:z-score, skewness 3.
原创 重學 Statistics,Cha8 Interval Estimation
這一章講的是:怎麼用 interval estimate 來找到整體平均值和整體比例的區間 The general form of interval estimate of a population mean is x̅ ± Margi
原创 重學statistics, Cha6 Continuous Probability Distributions
6.1 Uniform Probability Distribution Expected Value: E(x) = (a+b)/2 Variance: Var(x) = (b-a)2 /12 6.2 Normal Probab
原创 重學 Statistics, Cha11 Inferences About Population Variances
11.1 Inferences About a Population Variance 對於 chi-square distribution, 百度百科是這樣寫的: Interval Estimation We will use t
原创 重學Statistics, Cha5 Discrete Probabiliry Distributions
這一章學什麼? 5.1 Random Variable A random variable is a numerical description of the outcome of an experiment. Discrete Rand
原创 重學 Statistics, Cha16 General Linear Model
Curvilnear Relationship 當我們用 scatter diagram 來看的時候,發現 x y 的關係不完全是一條直線 另外把 residual 和 y 做一個 plot,也看到,是一個弧形的: 所以,我們用二
原创 重學Statistics,Cha1 Data and Statistics
**學什麼?這一章主要是Nominal, Ordinal, Interval, Ratio Scale的區別 I. 表格的各種表示 Elements are the entities on which data are collected
原创 重學Statistics, Cha2 Descriptive Statistics (Categorical and Quantitative Data)
2.1 Summary Categorical Data Frequency Distribution: A frequency distribution is a tabular summary of data showing th