Data Analysis

Step-by-step independence testing for 2×2 / R×C contingency tables: Pearson χ², Yates, G-test, Fisher exact, effect sizes, adjusted residuals, Cochran rule and optional Chapman estimate.

Data Processing

Validate CSV structure, detect malformed rows, unbalanced quotes and column mismatches

Data Processing

Upload a CSV file or paste CSV text, remove duplicate rows using exact or fuzzy matching, and download a cleaned CSV.

Data Processing

Infer a relational schema from CSV data and generate create-table plus ALTER migration plans for PostgreSQL, MySQL, SQLite, or SQL Server

Data Processing

Compare two CSV or XLSX datasets and export a PDF report with row, column, and cell-level differences

Data Processing

Assign own and inherited properties using lodash _.assignIn

Data Processing

Assign source properties to a target object using lodash _.assign

Data Processing

Count items by a derived key using lodash _.countBy

Data Processing

Split array into chunks of specified size using lodash _.chunk

Data Processing

Remove falsey values from array using lodash _.compact

Data Processing

Concatenate multiple arrays using lodash _.concat

Data Processing

Perform calculations on columns and add new rows