What is the average of the squares of the natural numbers from 1 to 7?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 20
The average is the sum of the seven squares divided by 7.
Squares: 1, 4, 9, 16, 25, 36, 49
Sum \(=1+4+9+16+25+36+49=140\)
\(\displaystyle \text{Average}=\frac{140}{7}=20\)
The average of the squares is 20.