What is the average of even numbers from 4 to 90? Here we will show you how to calculate the average of even numbers from 4 to 90.
To find the average of the even numbers from 4 to 90, we first calculate how many even numbers there are from 4 to 90. Then, we calculate the sum of even numbers from 4 to 90. And finally, we divide the sum by the number of even numbers to get the average.
The range is from 4 to 90, and the even numbers within that range are from 4 to 90. Therefore, the first even number in the sequence is 4, and the last even number in the sequence is 90.
Step 1) Calculate the total number of even numbers from 4 to 90
Here we calculate the total number of even numbers from 4 to 90 by entering the first and last even number in the sequence into our formula. Here is the formula and the math:
tot = (last - first + 2) ÷ 2
tot = (90 - 4 + 2) ÷ 2
tot = 88 ÷ 2
tot = 44
Total even numbers from 4 to 90 = 44
Step 2) Calculate the sum of even numbers from 4 to 90
To calculate the sum of even numbers from 4 to 90, you enter the total even numbers (tot) from Step 1 and the first even number in the sequence into our formula. Here is the formula and the math:
sum = (tot ÷ 2) × (2 × first + (2 × (tot - 1))
sum = (44 ÷ 2) × (2 × 4 + (2 × (44 - 1))
sum = 22 × (8 + 86)
sum = 22 × 94
sum = 2068
Sum of even numbers from 4 to 90 = 2068
Step 3) Calculate the average of even numbers from 4 to 90
Almost done! Now we can calculate the average of even numbers from 4 to 90 by dividing the sum of even numbers from Step 2 by the total even numbers from Step 1. Here is the formula, the math, and the answer:
Average = sum ÷ tot
Average = 2068 ÷ 44
Average = 47
Average of even numbers from 4 to 90 = 47
Average of Even Numbers Calculator
Here you can calculate the average of even numbers of a different sequence.