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The daily sales of an airtime vendor over a period of one month are summarised as follows: Statistics sales N Valid 30 Missing 0 Mean

The daily sales of an airtime vendor over a period of one month are summarised as follows:

Statistics
sales
NValid30
Missing0
Mean31.4000
Std. Deviation1.71778E1
Minimum9.00
Maximum86.00
Percentiles2518.5000
5028.0000
7539.0000

image text in transcribed
10- Mean =31.40 Std. Dev. =17.178 N =30 8- 6- Frequency 4- 2- 0.00 20.00 40.00 60.00 80.00 100.00 sales

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