The monthly expenses (in thousand %) of a family during a year from January to December months were 16, 19, 18, 23, 24, 28, 26, 19, 19, 22, 20 and 18, respectively.
In which of the months the deviation of the expenses from the average monthly expenses of the year was the least?
1
February, August and September
2
June and July
3
March, August and September
4
October and November