We knowthat
Mean=∑f1x1∑f1
The value of ∑f1x1 and ∑f1 can be calculated asfollows
Salary (in Rs)(x1)Number of workers(f1)f1x13000163000×16=480004000124000×12=480005000105000×10=50000600086000×8=48000700067000×6=42000800048000×4=32000900039000×3=2700010000110000×1=10000 Total∑f1=60∑f1x1=305000
Mean salary=30500060
Therefore, mean salary of 60 workers is Rs 5083.33