-10 up to 0 9 0 up to 10 31 10 up to 20 19 20 up to 30 8 30 up to 40 3 Total = 70 19 observations are at least10but less than20. Classes Relative Frequency Cumulative Relative Frequency -10 up to 0 9/70 = 0.129 0.129 0 up to 10 31/70 = 0.443 0.129 + 0.443 = 0.572 10 up to 20 19/70 = 0.271 0.129 + 0.443 + 0.271 = 0.843 20 up to 30 8/70 = 0.114 0.129 + 0.443 + 0.271 + 0.114 = 0.957 30 up to 40 3/70 = 0.043 0.129 + 0.443 + 0.271 + 0.114 + 0.043 = 1 1 ≈ 27.1% of the observations are at least10but less than20; 84.3% are less than 20. The distribution is not symmetric. Itis positively skewed. Class Relative Frequency 10 up to 20 12/56 = 0.214 20 up to 30 15/56 = 0.268 30 up to 40 25/56 = 0.446 40 up to 50 4/56 = 0.071 1 ≈
-10 up to 0 9 0 up to 10 31 10 up to 20 19 20 up to 30 8 30 up to 40 3 Total = 70 19 observations are at least10but less than20. Classes Relative Frequency Cumulative Relative Frequency -10 up to 0 9/70 = 0.129 0.129 0 up to 10 31/70 = 0.443 0.129 + 0.443 = 0.572 10 up to 20 19/70 = 0.271 0.129 + 0.443 + 0.271 = 0.843 20 up to 30 8/70 = 0.114 0.129 + 0.443 + 0.271 + 0.114 = 0.957 30 up to 40 3/70 = 0.043 0.129 + 0.443 + 0.271 + 0.114 + 0.043 = 1 ≈ 1 27.1% of the observations are at least10but less than20; 84.3% are less than 20. The distribution is not symmetric. Itis positively skewed. Class Relative Frequency 10 up to 20 12/56 = 0.214 20 up to 30 15/56 = 0.268 30 up to 40 25/56 = 0.446 40 up to 50 4/56 = 0.071 ≈ 1
Solution-Manual-Essentials-of-Business-Statistics-1st-Edition-Jaggia.docx