Data cleaning

2 stories tagged Data cleaning on Learning Fanatic.

Lesson 3.1: Market data: cleaning, adjustments and survivorship bias Learn to prepare market data for research: bars, adjusting for splits, bonuses and dividends, cleaning bad ticks, and avoiding survivorship bias.
Lesson 1.2: Cleaning messy data and handling missing values Learn to find and fix duplicates, inconsistent labels, impossible values and blanks, and to choose between deleting and filling missing data.