HND商业统计学Assessment_task_2.doc

Assessment task 2 Outcome covered 2 Question 1: i. Morning group Afternoon group 9 9 8 8 7 9 8 7 7 6 4 4 4 4 4 0 3 6 7 8 9 0 1 2 2 4 6 8 8 8 2 5 6 7 7 8 8 8 9 0 0 1 4 Morning group: Mode: 77 Median: 84 Lower quartile (Q1): 69 Upper quartile (Q3): 84 Semi-interquartile range: (Q3-Q1)/2=7.5 Afternoon group: Mode: 68 and 78 Median: 75.5 Lower quartile (Q1): 66 Upper quartile (Q3): 78 Semi-interquartile range: (Q3-Q1)/2=6 ii. From the chart in the front, and compare with the afternoon group’s data, we can know that: The morning group’s mean score is 77.12, the afternoon group’s mean score is 72.45. This means that the morning group’s whole score situation of the score is better than the afternoon group, it seems that the morning group has higher level than afternoon group. The morning group’s standard deviation is 7.14, the afternoon group’s standard deviation is 7.37. This situation means that the morning group’s whole difference is smaller than the afternoon group. Question 2 From the chart, we can see the difference between the two groups: The strongly disagree rate in the group of students up to 30 is 25%, in the group of students order than 30 is 16%. The disagree rate in the group of students up to 30 is 24%, in the group of students order than 30 is 21%. The no opinion situation rate in the group of students up to 30 is 15%, in the group of students order than 30 is 15%. The agree situation rate in the group of students up to 30 is 23%, in the group of students order than 30 is 29%. The strongly agree rate in the group of students up to 30 is 13%, in the group of students order than 30 is 19%. From all of these compare, we can know that based on the no opinion as a middle point, the different is becoming more and more larger. Question 3: This chart tells us that the house price increase faster than the salary’s increase speed. This situation tells us the per