Thống kê và dữ liệu
Many errors in quantitative papers sit in the data file, not the model: unreversed items, duplicates, an age of 250. A logged cleaning routine that lets you exp
Phương pháp nghiên cứu
Post a survey link with a reward in a big social media group and you may wake to 1,200 responses. A good share could be bots, speeders or one person submitting
Thống kê và dữ liệu
A survey of 600 shrinks to 410 once software drops every row with a blank. The three missing-data mechanisms, the cost of deletion and mean imputation, multiple
AI trong học thuật
An AI assistant writes R or Python in seconds, but code that runs without errors is not necessarily correct. How to describe data without uploading it, verify r
