b) The number of planes to arrive at the Dubai International Airport over N days were recorded and inputted into MINITAB for analysis. Exhibit 1 was subsequently generated.
Exhibit 1
Stem-and-Leaf Display: No. of Arrival
Leaf Unit = 1 N =*
5
2
01123
10
2
56899
**
3
0001123
(***)
3
6666678888
12
4
01134
7
4
57789
2
5
00
i. Calculate he missing values *, ** and *** [3]
ii. Find the value of the
a) Median [1]
b) Highest value [1]
c) Mode [1]
c) Using the stem and leaf diagram in Exhibit 1,
i. Form a frequency table by identifying the class intervals implicitly. [2]
Using the table created in 2ci) above,
ii. Calculate the sample mean [2]
iii. Calculate the sample variance
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