DISCUSSION QUESTIONS
The distance (in miles) travelled by 88 vehicles were inputted into Minitab for analysis. A Stem and Leaf plot of these distances (in miles) is presented below in Figure 1.
Figure 1 Stem-and-Leaf Display
Leaf Unit = 10.
DISCUSSION QUESTIONS
The distance (in miles) travelled by 88 vehicles were inputted into Minitab for analysis. A Stem and Leaf plot of these distances (in miles) is presented below in Figure 1.
Figure 1 Stem-and-Leaf Display
Leaf Unit = 10.0 N= ?
1 0 7 1 1 2 1 8 2 2 4 2 88 8 3 0223 11 3 567 19 4 00001334 37 4 555555556667777888 (??) 5 000112223333344 36 5 55566788 28 6 00000000001123444 11 6 666788 5 7 0002 1 7 5
(a) Calculate the missing values “?” and “??” and explain or show how you arrived at your answer.
(b) Identify the minimum and the maximum values.
(c) Identify the class intervals implicit in the Stem and Leaf Diagram above. Hence develop a grouped frequency distribution, a relative frequency distribution and a cumulative frequency distribution from this display.
(d) What proportion of the vehicles travelled for more than 600 miles.
(e) What are the advantages of using a Stem and Leaf Plot to summarize a dataset?
(f) What are the differences between a Stem and Leaf Diagram and a Box Plot.
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