Re: sum formula equals zero. Originally Posted by zoie01 I had this problem and tried several things to solve it. You can ensure that all the cells being summed are in number fomat, and must be numbers (with no ' in front of them). Also ensure there are no circular formulas in the range of cells being summed.
For example the median expected annual pay for a typical Flight Instructor in the United States is $94,803 so 50% of the people who perform the job of Flight Instructor in the United States are expected to make less than $94,803. Source: HR Reported data as of October 2015.
Airlines provide the necessary training for Federal Aviation Administration certification. The average income of flight attendants was less than $44,000 a year in 2013, according to the U.S. Bureau of Labor Statistics.n other industries, corporate flight attendants earned an average of $69,430 per year, the highest of any industry. Attendants for air transportation support activities averaged $59,420 annually, while those for nonscheduled air transport, or charter flights, averaged $43,080 per year.