In: Statistics and Probability
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.
13 | 13 | 13 | 20 | 26 | 29 | 32 | 34 | 34 | 34 | 35 | 35 | 36 | 37 | 38 |
41 | 41 | 41 | 42 | 44 | 47 | 47 | 49 | 51 | 53 | 55 | 56 | 62 | 67 | 82 |
Click here for the Excel Data File
(Round your answers to 2 decimal places.)
Solution:
Data is already arranged in ascending order.
13 | 13 | 13 | 20 | 26 | 29 | 32 | 34 | 34 | 34 | 35 | 35 | 36 | 37 | 38 |
41 | 41 | 41 | 45 | 45 | 47 | 47 | 49 | 51 | 53 | 55 | 56 | 62 | 67 | 82 |
a)The quartiles can be calculated by using formula:
Therefore
b) The decilies can be calculated by using formula:
Therefore
c) The percentile can be calculated by using formula:
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D; = (in + 1) yt value 10
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