昨天阅读2小时, 累计阅读121小时
1. Topics; today focuses on Statistics, mean, median, variance, standard deviation, skewness, kurtosis, normal distribution and Gaussian distribution, covariance, correlation, Bernoulli distribution, binominal distribution, Bayer’s theorem; linear combination of variance; linear regression,
2. Learn: data is extremely important. How to digest the data and identify the value of data via statistics. Process shall be1. Formulate the problem 2.Get the data, 3, display the data visually; 4.perform the necessary statistical calculation; 5. Interpret the analysis result. Table, histogram, time series plot are three widely used tool.