SOLVED:An analysis of 50 train derailment incidents identified the main causes listed below, where T denotes bad track, E denotes faulty equipment, H denotes human error, and O denotes other causes (based on data from the Federal Railroad Administration). Construct a table summarizing the frequency distribution of these causes of train derailments. TTTEEHHHHHOOHHHEETTTETHOT TTTTTTHTTHEETTEETTTHTTOOO

3 injured after rockslide causes train derailment in West Virginia

Train derailments have declined in recent years, but they’re not uncommon, US data shows

Yes, the US averages more than 1,700 train derailments a year