A class teacher conducted a unit test in the class. If out of 30 students, 14 scored 80 and the rest 16 students scored 65, then what is the weighted average score?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 72.
We know that,
Average = Sum of observations/Number of observations
According to the question,
The weighted average = (14 × 80 + 16 × 65)/30 = 2160/30 = 72