Big Idea 2

Abstraction

Hiding complex details to focus on main ideas

Analog data

Continuous data that can have any value in a range

Bias

When data or algorithms lead to unfair results

Binary number system

A system using only 0s and 1s

Bit

The smallest unit of data, a 0 or 1

Byte

A group of 8 bits

Classifying data

Sorting data into categories

Cleaning data

Fixing or removing incorrect or incomplete data

Digital data

Data represented by 0s and 1s

Filtering data

Showing only the data that meets certain conditions

Information

Organized data that has meaning

Lossless data compression

Reduces file size with no data loss

Lossy data compression

Shrinks files by removing some data

Metadata

Data that describes other data

Overflow error

When a number is too big for the system to handle

Patterns in data

Trends or repeated sequences found in data

Round-off or rounding error

Small error from cutting off digits

Scalability

How well a system handles growing amounts of data