Question

The weights of 200 employees of a company are given below:

Weight (in kg)	Number of Employees
55	42
68	35
75	47
63	38
85	17
78	21

The average weight of all the employees is:

1. 78.46 kg
2. 63.58 kg
3. 68.46 kg
4. 74.58 kg

Answer 1

Correct Answer - Option 3 : 68.46 kg

Calculation:

Average weight of all the employees = (Total weight of all the Employees)/(Total number of Employees)

⇒ (55 × 42 + 68 × 35 + 75 × 47 + 63 × 38 + 85 × 17 + 78 × 21)/200

⇒ (2310 + 2380 + 3525 + 2394 + 1445 + 1638)/200

⇒ 13692/200

⇒  6846/100

⇒ 68.46 kg

∴ The average weight of all the employees is 68.46 kg.