What is the average of odd numbers from 2 to 31? Here we will show you how to calculate the average of odd numbers from 2 to 31.
To find the average of the odd numbers from 2 to 31, we first calculate how many odd numbers there are from 2 to 31. Then, we calculate the sum of odd numbers from 2 to 31. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 2 to 31, and the odd numbers within that range are from 3 to 31. Therefore, the first odd number in the sequence is 3, and the last odd number in the sequence is 31.
Step 1) Calculate the total number of odd numbers from 2 to 31
Here we calculate the total number of odd numbers from 2 to 31 by entering the first and last odd number in the sequence into our formula. Here is the formula and the math:
tot = (last - first + 2) ÷ 2
tot = (31 - 3 + 2) ÷ 2
tot = 30 ÷ 2
tot = 15
Total odd numbers from 2 to 31 = 15
Step 2) Calculate the sum of odd numbers from 2 to 31
To calculate the sum of odd numbers from 2 to 31, you enter the total odd numbers (tot) from Step 1 and the first odd number in the sequence into our formula. Here is the formula and the math:
sum = (tot ÷ 2) × (2 × first + (2 × (tot - 1))
sum = (15 ÷ 2) × (2 × 3 + (2 × (15 - 1))
sum = 7.5 × (6 + 28)
sum = 7.5 × 34
sum = 255
Sum of odd numbers from 2 to 31 = 255
Step 3) Calculate the average of odd numbers from 2 to 31
Almost done! Now we can calculate the average of odd numbers from 2 to 31 by dividing the sum of odd numbers from Step 2 by the total odd numbers from Step 1. Here is the formula, the math, and the answer:
Average = sum ÷ tot
Average = 255 ÷ 15
Average = 17
Average of odd numbers from 2 to 31 = 17
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.