Average Calculator, Average Formula, How to Calculate Average

How to easily calculate average using average calculator

Good evening engpocket friends, on this moment, we are going to talk about average. Before we go ahead, you can use this average calculator to find your way to calculate average just in seconds.

How to problem solve using average calculating

Besides using the calculator, you can also use the average manual formula which we will talk about later in this post.

Example 1:
Find the average of the following scores: 80, 90, 75, 95.
Answer is:

Example 2:
In a city, rain is falling over 3 days which was 12 mm, 15 mm, and 10 mm. What is the average rainfall?
Answer is:

Average formula

The problem solve and the average calculator above use the exact same formula which is:

Oh, i almost forgot, we have not even known deeper about average…..

What is an average?

In math, average, specifically the arithmetic mean is the sum of a group of numbers divided by the quantity of those numbers. It represents a single value that summarizes an entire data set.

How to calculate the average?

This is the easiest steps that I can tell you about how to calculate average:

1. Divide the total sum by how many numbers.
2. Add up all the numbers.

More practical examples for engpocket friends

A. Concrete compressive strength: A lab technician is testing four cylinders of concrete from the same batch to ensure that they meet the 30 MPa requirement. The results are: 29 MPa, 31 MPa, 32 MPa, and 30 MPa. What is the average strength?

Calculation:

1. Add the values: 29 + 31 + 32 + 30 = 122
2. Divide by the count: 122 / 4 = 30.5 MPa

Answer: The batch passes the requirement because the average is above 30 MPa.

B. Material delivery logistics: A site manager wants to know the average number of gravel trucks arriving per day to plan the labor shift. Over 5 days, the value is: 8, 12, 10, 7, and 13 trucks.

Calculation:

1. Add the values: 8 + 12 + 10 + 7 + 13 = 50
2. Divide by the count: 50 / 5 = 10 trucks per day conclusion: The manager should prepare the crew to handle roughly 10 trucks every morning.

Professional tips and tricks to find average value

If engpocket friends cannot open the average calculator, try this trick, guess a baseline number. If your numbers are 98, 102, and 100, guess 100. Then, see how far each number is from 100. (98 is -2, 102 is +2, 100 is 0). Sum those differences (-2 + 2 + 0 = 0).

Since the sum of differences is zero, your guess of 100 was exactly the average! Engpocket friends can try the tricks using other numbers too.

The danger of outliers. Why we should watch our data

One thing to remember before we input numbers into the average calculator is the outlier effect. An outlier is a number that is much higher or much lower than the rest of the group.

For example, if we are measuring the depth of five foundation holes:

• Hole 1: 10 ft
• Hole 2: 11 ft
• Hole 3: 10.5 ft
• Hole 4: 10.2 ft
• Hole 5: 35 ft (Perhaps a mistake or a deep pit)

If we calculate the average, the 35 ft hole will pull the result up to 15.34 ft, which doesn’t accurately represent the typical hole.

As a smart engineer, always scan the data for these weird numbers before trusting the average result.