Data Tools

Data Sampling

Generate random or stratified samples from datasets with reproducible results

Input data (JSON array)

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Sampling method

Sample size type

Sample size (%)

Random seed (optional)

Sample result

Output will appear here...

Example input

[
  { "id": 1, "category": "Electronics", "product": "Laptop", "price": 1200 },
  { "id": 2, "category": "Electronics", "product": "Phone", "price": 800 },
  { "id": 3, "category": "Books", "product": "Guide", "price": 50 }
]

Simple random sample: 50% of records
Stratified sample by category: proportional draw per group
Fixed size with seed for reproducibility