In sociology primary data is data you have collected yourself and secondary data is data you have gathered from primary sources to create new research. In terms of historical research, these two terms have different meanings.A primary source is a book or set of archival records.econdary data has already been collected by and readily available  from other sources. It is cheaper and easier to obtain than primary  data. It helps provide an understand â¦ ing of the problem and allows  for comparison of the primary data collected.
Mark Kelley, MD. Mark Kelley, MD practices as a Psychiatrist in Tulsa, OK.Mark Kelley, MD graduated from Univ Of Ok Coll Of Med, Oklahoma City Ok 73190.
Having more than 33 years of diverse experiences, especially in FAMILY PRACTICE, GYNECOLOGICAL ONCOLOGY, INFECTIOUS DISEASE, OBSTETRICS/GYNECOLOGY, PEDIATRIC MEDICINE, Dr. Tassew Tesfaye affiliates with Dekalb Medical Center, and cooperates with other doctors and specialists in medical group Memorial Drive Family Medicine P.c. Call Dr. Tassew Tesfaye on phone number (404) 809-2480 for more information and advice or to book an appointment.