2描述統(tǒng)計(jì)1：表格法和圖形法-免費(fèi)閱讀
【正文】 2023年 4月 1日星期六 下午 2時(shí) 27分 45秒 14:27: 1最具挑戰(zhàn)性的挑戰(zhàn)莫過于提升自我。 2023年 4月 1日星期六 2時(shí) 27分 45秒 14:27:451 April 2023 1空山新雨后，天氣晚來秋。 , April 1, 2023 很多事情努力了未必有結(jié)果，但是不努力卻什么改變也沒有。 :27:4514:27Apr231Apr23 1故人江海別，幾度隔山川。 (3)決定各組界限值，確定分點(diǎn)。 Frequency Distribution 頻數(shù)分布 College of Management 20位顧客對(duì)飯店服務(wù)質(zhì)量的評(píng)價(jià) : 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 2 Below Average 3 Average 5 Above Average 9 Excellent 1 Total 20 College of Management Relative Frequency and Percent Frequency Distributions 相對(duì)頻數(shù) (頻率 )分布和百分?jǐn)?shù)頻數(shù)分布 ? 相對(duì)頻數(shù) (頻率 ) : 各組頻數(shù)與全部頻數(shù)之和的比值稱為 相對(duì)頻數(shù) (頻率 )。 ? 百分?jǐn)?shù)頻數(shù) 是相對(duì)頻數(shù)乘 100 College of Management Example: Relative Percent Rating Frequency Frequency Poor 10 Below Average 15 Average 25 Above Average 45 Excellent 5 Total 100 College of Management Bar Graph 條形圖 ? 條形圖是描述在一個(gè)頻數(shù)、相對(duì)頻數(shù)或百分?jǐn)?shù)頻數(shù)分布中匯總的品質(zhì)數(shù)據(jù)的圖形方法 ? 在圖形的橫軸為每一組別的標(biāo)記 ? 縱軸為頻數(shù)、相對(duì)頻數(shù)、百分?jǐn)?shù)頻數(shù) ? 用固定寬度的條繪制每一標(biāo)記，擴(kuò)展條的高度達(dá)到用縱軸上表示的各組別的頻數(shù)、相對(duì)頻數(shù)或百分?jǐn)?shù)頻數(shù) ? 條形相對(duì)獨(dú)立以強(qiáng)調(diào)每一類是一獨(dú)立的事實(shí) College of Management Example: Bar Graph 條形圖 1 2 3 4 5 6 7 8 9 Poor Below Average Average Above Average Excellent Frequency Rating College of Management Pie Chart 餅形圖 ? 餅形圖是常用的描繪品質(zhì)數(shù)據(jù)相對(duì)頻數(shù)分布的圖形方法 ? 先畫圓，然后用相對(duì)頻數(shù)把圓細(xì)分成扇形與相對(duì)頻數(shù)對(duì)應(yīng) ? 扇形的角度由其相對(duì)頻數(shù)的比例決定 College of Management Example: Pie Chart 餅形圖例 Average 25% Below Average 15% Poor 10% Above Average 45% Exc. 5% College 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 Dis
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