Yes, work experience in your field can demonstrate your practical skills and knowledge, and can make you a more competitive candidate for graduate programs. However, it is not always a requirement and may depend on the specific program or research focus.
It is important to note that while GPA is a significant factor, it is not the only criteria that graduate committees consider. They also look at other factors such as research experience, letters of recommendation, and personal statements. A low GPA may not necessarily disqualify you, but you may need to showcase other strengths in your application.
The institution you received your undergraduate degree from may be taken into consideration, but it is not the sole determining factor. Graduate committees are more interested in the courses you have taken, the research you have conducted, and your academic performance. These factors will give a better indication of your potential as a graduate student.
Publications and research experience are highly valued by graduate committees, as they demonstrate your interest and knowledge in your field of study. They also show your ability to conduct research and contribute to the academic community. However, not having publications or research experience does not necessarily disqualify you from being accepted into a graduate program.
Extracurricular activities and community service can showcase your leadership skills, time management, and ability to balance multiple commitments. These qualities are highly valued in graduate students, and can set you apart from other applicants. However, they may not be as important as your academic and research background in the eyes of graduate committees.