摘要： 4.3 The Coefficient of Determination 为评估模型，我们可以使用以下方法： (1) the total variation in the observed values of the response variable（观察值中的y） (2) the amount 阅读全文

摘要： 4.2 The Regression Equation Because we could draw many different lines through the cluster of data points, we need a method to choose the “best” line. 阅读全文

摘要： 4.1 Linear Equations with One Independent Variable 阅读全文

摘要： 3.4 Descriptive Measures for Populations; Use of Samples For a particular variable on a particular population： 1.There is only one population mean—nam 阅读全文

摘要： 3.3 The Five-Number Summary; Boxplots the deciles divide a data set into tenths (10 equal parts), the quintiles divide a data set into fififths (5 equ 阅读全文

摘要： sequencing：使用二代测序原因：高通量，短序列 不用长序列原因： 1.算法错误率高 2.长序列测序将嵌合体基因错误积累。嵌合体基因：通过重组由来源与功能不同的基因序列剪接而形成的杂合基因 sequencing： 增多的total length>N>gap>missing in genome 阅读全文

摘要： Measures of Variation 方差：measures of variation or measures of spread 源于range发现range不足以评估整个set（因为只用到largest and smallest value），所以有了方差 The Sample Stand 阅读全文

摘要： Measures of Center measures of central tendency:the center or most typical value:average Mean:its arithmetic average；受极值影响；可以通过去掉极值减少极值的影响 Median:the 阅读全文

摘要： Distribution Shapes 由直方图到 smooth curve 1.this distribution of heights is bell shaped(or mound shaped), but the smooth curve makes seeing the shape a l 阅读全文

摘要： 2.3 Organizing Quantitative Data group quantitative data： To organize quantitative data, we first group the observations into classes (also known as c 阅读全文