HSC Together Year 11 Maths Standard: Measurement Errors

#### Maths Standard

• Earning and Managing Money
• Formulae and Equations
• Measurement and Energy
• Relative Frequency and Probability
• Perimeter, Area and Volume
• Classifying and Representing Data
• Linear Relationships
• Interest and Depreciation
• Exploring and Describing Data
• Working with Time
• Budgeting and Household Expenses
• Back to other subjects
Back to other subjects

# Measurement Errors

### What are Measurement Errors?

There are varying degrees of instrument error and measurement uncertainty when measuring. Every time a measurement is repeated, a slightly different result will be obtained. It is important you understand the following calculations:

• Precision: the smallest unit on measuring instrument or limit of reading
• Absolute error: measured value – actual value or 1/2 x precision
• Upper bound: measurement + absolute error
• Lower bound: measurement – absolute error
• Relative error: absolute error / measurement
• Percentage error: (absolute error / measurement) x 100

### What are the Different Terms and How do We Solve Them?

The videos below explain the different definitions in more detail and how to find them when given a measurement.

### How to Calculate Relative Error and Percentage Error

The following video explains how to calculate relative and percentage errors when given a measurement.

### How to Further Calculate Different Measurement Errors

The following videos will demonstrate additional examples of these calculations.

##### Part 2:

Want to learn more? Check out more of our Preliminary Standard Math resources here!

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