The following are 80 measurements of the daily emissions (in tons) of sulfur dioxide from an industrial plant.
|
15.8
|
26.4
|
17.3
|
11.2
|
23.9
|
24.8
|
18.7
|
13.9
|
9
|
13.2
|
|
22.7
|
9.8
|
6.2
|
14.7
|
17.5
|
26.1
|
12.8
|
17.6
|
17.6
|
23.7
|
|
26.8
|
22.7
|
22.7
|
20.5
|
11
|
20.9
|
15.5
|
16.7
|
16.7
|
10.7
|
|
19.1
|
15.2
|
15.2
|
26.6
|
20.4
|
21.4
|
19.2
|
16.9
|
16.9
|
19
|
|
18.5
|
23
|
23
|
20.1
|
16.2
|
18
|
7.7
|
23.5
|
23.5
|
14.5
|
|
18.4
|
29.6
|
29.6
|
17
|
20.8
|
24.3
|
22.5
|
18.4
|
18.4
|
18.1
|
|
8.3
|
21.9
|
21.9
|
22.3
|
13.3
|
11.8
|
19.3
|
25.7
|
25.7
|
31.8
|
|
25.9
|
10.5
|
10.5
|
27.5
|
18.1
|
17.9
|
9.4
|
20.1
|
20.1
|
28.5
|
Note. Please consider the measurements: 6.2, 7.7, 8.3, 9.0, 9.8 and any other tens digit as 06.2, 07.7, 08.3, 09.0, and 09.8 respectively so that each measurement is a 3-digit character. Using the first two digits of the measurement as your stem, construct a stem and leaf display of the data above.
Using the display determine the following:
i) The median Q2.
ii) The 1st quartile Q1
iii) The 3rd Quartile Q3
iv) The inter-quartile range, Q3-Q1
Draw a Box and Whisker plot and label completely indicating items i-iv in the plot as well as the lower and upper whiskers and also the outliers and the extreme outliers.