The Thomas Supply Company Inc. is a distributor of gas-powered generators. As wi
ID: 2630279 • Letter: T
Question
The Thomas Supply Company Inc. is a distributor of gas-powered generators. As with any business, the length of time customers take to pay their invoices is important. Listed below, arranged from smallest to largest, is the time, in days, for a sample of The Thomas Supply Company Inc. invoices.
10
10
12
19
28
30
34
38
40
40
41
43
45
46
49
52
54
56
57
60
62
64
67
70
73
76
77
79
85
93
a) Determine the first and third quartiles.
b)Determine the second decile and the fourth decile
10
10
12
19
28
30
34
38
40
40
41
43
45
46
49
52
54
56
57
60
62
64
67
70
73
76
77
79
85
93
Explanation / Answer
a. First Quartile:
Median of the data set is 50.5
So the first quartile is the median of
10
10
12
19
28
30
34
38
40
40
41
43
45
46
49
First Quartile is 38
Second Quartile:
Second Quartile is the median of
52
54
56
57
60
62
64
67
70
73
76
77
79
85
93
Second Quartile is 67
b. D2 is denoted as the second decile under which 20% of the total population lies.
D2 is 32
D4 is denoted as the fourth decile under which 40% of the total population lies.
4th decile: 44
10
10
12
19
28
30
34
38
40
40
41
43
45
46
49
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