Specific problem is:
1. Read the file sale. Sales data in the CSV, includes the outliers of sales is empty,
2. Calculate the total sales volume and average sales
3. Calculate the standard deviation
4. The deviation is greater than three times the standard deviation of outliers remove
5. Sales can be divided into eight interval [, 400), (400800), [800120 0), (1200160), [1600200 0), (2000240), [2400280 0), (2800), the percentage of each interval statistics
Can only be read out at present, delete empty value delete not to drop (kneel)
Is there who can teach me, or see me where I wrong ww,
I really don't know the
Data is probably figure that, there are a few places I wrong to wrong screenshot
(I know I would very very unprofessional at sixes and sevens an apology first, I'm sorry WWW)
