Answer:
totals (in column from top to bot):13,20,117 totals (in row from left to right): 60, 90, 150
Explanation:
In column: Management 7+6=13
Supervision 8+12=20
Production 45+72=117 so the total total(the bottom right corner)=13+20+117=150
In row: Male 7+8+45=60
Female 6+12+72=90
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What do you notice? Um, the number of male in these three job types is smaller than the number of female? Or the sample size is 150... There can be a lot of different answers.
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Maybe the total local population. This question is also an open question. Hope this helps!