Arrays, Data, and Search
Ages 16–18Difficulty adapts to you
Arrays, Data, and Search
An array stores ordered values accessed by an index. Traversal visits each item; filtering keeps items that satisfy a condition; aggregation combines values. Linear search checks one by one, while sorting can enable faster repeated searches.
Your goals
- ✓You can store collections, calculate summaries, and search or sort data efficiently.
- ✓You can use Arrays, Data, and Search, model correctly.
- ✓You can use the definitions, units, assumptions, and examples to check your answer.
Words to know
- Arrays, Data, and Search:
- Store collections, calculate summaries, and search or sort data efficiently.
- model:
- A rule or representation used to describe a situation and make a prediction.
Examples
- 1The mean of an array is sum ÷ length, provided the array is not empty.
- 2A binary search halves a sorted search interval after each comparison.
Check these
- • Do not skip the meaning of a term or give a result without explaining what it means.
- • Keep every number, symbol, label, and unit in its correct place.
- • Show enough working to check how you reached your answer.
Helpful habits
- • Read the whole question before choosing what to do.
- • Show one clear step at a time and check each step.
- • If you are stuck, draw a model, try smaller numbers, or revisit the example.
Now try your own
Create your own arrays, data, and search example, solve it, and explain how you checked it.
Professor Wise Owl
Wisdom & Understanding“Patience and practice make perfect — give yourself time.”