Explain about Relational charts

2. http://www.visualisingdata.com/2017/06/good-data-visualisation-trustworthy/

please write about these two questions

2nd one is self explanatory in the link and 1st one explain about relational charts

With regards to chart types, explain what “R” means from “CHRTS.”

Explain what Kirk (2016) means by “Good Data Visualization is Trustworthy.”

just simple answers like 5 sentences max