- How to Calculate an Average?
- How to Calculate a Weighted Average?
- How to Calculate a Moving Average?
- How to Calculate Average Speed?
- Batting Average Calculator: How to Calculate Batting Average?
- How to Calculate an Average in Excel?
- How to Calculate an Average Stock Price?
- How to Calculate Your Average Weight?
- How to Calculate Fuel Efficiency (Petrol Average)?
Averages are a key part of everyday life in Singapore. Whether you're estimating your daily MRT commute time, tracking electricity bills, or analyzing a player's batting average in the Singapore Premier League, knowing how to calculate an average can help in making better decisions.
This guide covers different types of averages, from simple mean to weighted and moving averages, and how to compute them in Excel. Plus, our online average calculator makes it even easier—no manual calculations needed!
How to Calculate an Average?
Averages help monitor trends, manage expenses, and make informed choices.
To calculate the mean (simple) average, use this formula:
Average = Sum of all values ÷ Number of values
For example
Let’s say you take the MRT from Yishun to Raffles Place every morning. Some days it’s smooth, but other days there are delays. Over the past five days, your commute times were 38, 40, 37, 42, and 39 minutes.
(38 + 40 + 37 + 42 + 39) ÷ 5 = 196 ÷ 5 = 39.2 minutes
So, your average daily commute takes 39.2 minutes.
How to Calculate a Weighted Average?
Weighted averages assign different levels of importance to various values. This method is useful in university grading, mortgage interest rates, and financial planning.
Formula: Weighted Average = (Value 1 × Weight 1 + Value 2 × Weight 2 + ...) ÷ (Sum of Weights)
How to find Average Grade?
You’re applying to the National University of Singapore (NUS), where your final grade consists of 40% coursework and 60% final exams.
- Coursework score = 82%
- Final exam score = 76%
((82 × 0.4) + (76 × 0.6)) ÷ 1 = (32.8 + 45.6) ÷ 1 = 78.4
Your final weighted grade is 78.4%, with exams contributing more to the final score.
How to Calculate a Moving Average?
Moving averages help identify trends over time. This is useful in business, stock trading, and temperature tracking.
Let's say you run a bubble tea shop in Bugis and want to track weekly sales trends. Your earnings over five weeks are:
- Week 1: $5,000
- Week 2: $5,300
- Week 3: $5,100
- Week 4: $5,400
- Week 5: $5,600
To calculate a 3-week moving average:
- 1st average: (5,000 + 5,300 + 5,100) ÷ 3 = $5,133
- 2nd average: (5,300 + 5,100 + 5,400) ÷ 3 = $5,267
- 3rd average: (5,100 + 5,400 + 5,600) ÷ 3 = $5,367
This helps smooth fluctuations and forecast demand.
How to Calculate Average Speed?
Average speed is useful for drivers, cyclists, and runners.
Formula: Average Speed = Distance Travelled ÷ Time Taken
How to Calculate Average Speed?
You drive 240 km from Singapore to Malacca in 3.5 hours.
240 ÷ 3.5 = 68.6 km/h
Your average speed was 68.6 km/h.
Batting Average Calculator: How to Calculate Batting Average?
For cricket and baseball fans, here’s the batting average formula:
Batting Average = Total Runs Scored ÷ Total Number of Times Out
For example
You score 720 runs in a cricket tournament and get out 15 times.
720 ÷ 15 = 48.00
Your batting average is 48.00—a strong performance!
How to Calculate an Average in Excel?
Need to compute an average in Excel? Follow these steps:
- Enter your data in a column.
- Click on an empty cell and type: =AVERAGE(A1:A5) (assuming values are in cells A1 to A5)
- Press Enter to see the result.
How to Calculate an Average Stock Price?
Investing in the Singapore Exchange (SGX)? Calculating your average stock price is crucial.
Let's say you buy:
- 10 shares at $2.00 each ($20 total)
- 5 shares at $2.50 each ($12.50 total)
Average Stock Price = (Total Cost) ÷ (Total Number of Shares)
((10 × 2.00) + (5 × 2.50)) ÷ (10 + 5) = (20 + 12.50) ÷ 15 = $2.17 per share
How to Calculate Your Average Weight?
Your weight fluctuates, so tracking an average helps.
For example
You weigh yourself weekly:
- Week 1: 68 kg
- Week 2: 67.5 kg
- Week 3: 67 kg
- Week 4: 66.8 kg
(68 + 67.5 + 67 + 66.8) ÷ 4 = 67.3 kg
Your average weight over the month is 67.3 kg.
How to Calculate Fuel Efficiency (Petrol Average)?
For car owners, knowing fuel efficiency helps manage costs.
Formula: Mileage (km per litre) = Total Distance Travelled ÷ Total Fuel Consumed
For example
You drive 400 km and use 30 litres of petrol.
400 ÷ 30 = 13.3 km/litre
Your car’s average fuel efficiency is 13.3 km per litre.
Tips to Improve Fuel Efficiency:
- Keep tyre pressure optimal to reduce resistance.
- Avoid sudden acceleration and braking.
- Service your car regularly for optimal performance.
- Drive at 80-100 km/h for the best mileage.
Averages are useful for budgeting, fitness tracking, sports statistics, and investment decisions. Now that you know how to calculate them, try using our online average calculator for quick results!
