What is the mean of the first 14 prime numbers (correct to two decimal places)?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 20.07
The mean is the sum of the values divided by their number, so the first 14 primes are listed and added. The smallest prime is 2, since 1 is not a prime.
First 14 primes: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43
Sum \(=281\)
Mean \(\displaystyle=\frac{281}{14}=20.071...\)
Correct to two decimal places: 20.07
The mean is 20.07.