Prabhanjan Narayanachar Tattar has seven years of experience with R software and has also co-authored the book A Course in Statistics with R published by Narosa Publishing House.The author has built two packages in R titled gpk and ACSWR. He has obtained a PhD (Statistics) from Bangalore University under the broad area of Survival Analysis and published several articles in peer-reviewed journals. During the PhD program,the author received the young Statistician honors in IBS(IR)-GK Shukla Young Biometrician Award (2005) and Dr. U.S. Nair Award for Young Statistician (2007) and also held a Junior and Senior Research Fellowship of CSIR-UGC.Prabhanjan is working as a Business Analysis Advisor at Dell Inc, Bangalore. He is working for the Customer Service Analytics unit of the larger Dell Global Analytics arm of Dell.