2描述統(tǒng)計1：表格法和圖形法-全文預(yù)覽
【正文】 of Management Summarizing Quantitative Data 數(shù)量數(shù)據(jù)匯總 ? Frequency Distribution 頻數(shù)分布 ? Relative Frequency Distributions and Percent Frequency Distributions 相對頻數(shù)分布和百分?jǐn)?shù)頻數(shù)分布 ? Dot Plot 打點圖 ? Histogram 直方圖 ? Cumulative Distribution 累積分布 ? Ogive 穹形圖 College of Management Example: Hudson Auto Repair Hudson 汽車修理 91 78 93 57 75 52 99 80 97 6271 69 72 89 66 75 79 75 72 76104 74 62 68 97 105 77 65 80 10985 97 88 68 83 68 71 69 67 7462 82 98 101 79 105 79 69 62 7391 78 93 57 75 52 99 80 97 6271 69 72 89 66 75 79 75 72 76104 74 62 68 97 105 77 65 80 10985 97 88 68 83 68 71 69 67 7462 82 98 101 79 105 79 69 62 73College of Management Frequency Distribution 頻數(shù)分布 ? 組數(shù) 一般分為 520個組 ,根據(jù)樣本容量確定 ,如下表 樣本容量 n 分組個數(shù) k 50以下 5～ 6 50～ 100 6～ 10 100～ 250 7～ 12 250以上 10～ 20 College of Management ? 組寬度 ?每一組別的寬度相同 ?近似組寬為 ? 組限 ?組距兩端的數(shù)值稱為組限，其中，每組的起點數(shù)值稱為下限，每組的終點數(shù)值稱為上限。College of Management Descriptive Statistics Ⅰ: Tabular and Graphical Methods 描述統(tǒng)計 Ⅰ ：表格法和圖形法 Chapter 2 College of Management 主要內(nèi)容 ? Summarizing Qualitative Data 品質(zhì)數(shù)據(jù)匯總 ? Summarizing Quantitative Data 數(shù)量數(shù)據(jù)匯總 ? StemandLeaf Display 莖葉顯示 ? Crosstabulations and Scatter Diagrams 交叉分組列表和散點圖 College of Management Summarizing Qualitative Data 品質(zhì)數(shù)據(jù)匯總 ? Frequency Distribution 頻數(shù)分布 ? Relative Frequency Distributions and Percent Frequency Distributions 相對頻數(shù)分布和百分?jǐn)?shù)頻數(shù)分布 ? Bar Graph and Pie Chart 條形圖和餅形圖 College of Management 頻數(shù)分布： 按數(shù)據(jù)的品質(zhì)標(biāo)志分組，全部數(shù)據(jù)在各組中的分配狀況稱為頻數(shù)分布。 Frequency Distribution 頻數(shù)分布 College of Management 20位顧客對飯店服務(wù)質(zhì)量的評價 : Below Average Average Above Average Above Average Above Average Above Average Above Average Below Average Below Average Average Poor Poor Above Average Excellent Above Average Average Above Average Average Above Average Average Example: College of Management Frequency Distribution Table 頻數(shù)分布表 Rating Frequency Poor
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