Global Journal of Human Social Science, G: Linguistics and Education, Volume 23 Issue 8

Patton (2015), in purposive homogenous sampling technique the researcher selects cases that are very similar to study the characteristics they have in common. The researcher must choose participants with similar characteristics. The researcher chose homogenous sampling technique because the main criterion of selecting participants was to choose Bangladeshi students who want to choose teaching as their future career path. The reason behind choosing this criterion is that if the students know about the qualities an effective teacher should have, they can answer the interview questions related to the research topic. Other criteria were: (b) the students must be from private university where the medium of instruction is English and want to become teachers in future (c) their age range is 19-25 (d) they are from Bangla medium background and (e) they were found willing to be a part of this study. For the reasons mentioned above the participants are suitable for this research. Most of the participants are from Bangla medium background. Their pseudonyms are given below: Participants’ Table Name (pseudonyms) Background Ratul Bangla medium Shafiqul Bangla medium Sreetoma Bangla medium Rajib Bangla medium Nipa Bangla medium Anjie Bangla medium Sandip Bangla medium Sidhu Bangla medium Pinky Bangla medium Torsha Bangla medium In addition, the researcher selected snowball sampling technique for this research. Researchers use snowball sampling when it is difficult to reach to the expected population for this study. (Anieting & Mosugu, 2017). Teaching is a well-known profession for Bangladeshi students. For this reason, the researcher followed snowball sampling technique. The researcher first posted in different Facebook groups to ask those students who want to choose teaching as their career path. One student responded to the post first. Then, the researcher contacted with the student via messenger and asked her whether she was free for the interview session. After getting her permission, the researcher took contact number of another student who want to choose teaching as his profession. Thus, the researcher could manage ten participants for the interview. d) Instrument Interview technique was used by the researcher to collect the data. According to Bolderston (2012), researchers take face-to-face qualitative interviews by listening and gaining information from participants. There are different kinds of qualitative interviews. Among those interviews E-mail or internet interview is a prominent one. Semi-structured interviews can be taken through electronic devices which include e-mail, instant messaging, video-conferencing and others. The researcher took semi-structured interviews of ten participants from a renowned public university of Bangladesh through zoom application. The researcher made ten open-ended interview questions for the participants. In qualitative interviews researchers ask topic-related questions and noted down their answers (Creswell, 2012). This instrument made this research reliable. e) Data Collection Procedure After making ten interview questions the researcher did a pilot study. The researcher piloted the interview questions with three participants Rahim, Nashrah and Antonio (pseudonyms). The researcher chose these three students because these students did their thesis by using qualitative method in their postgrad level and had good knowledge on the patterns of interview questions. Harding (2013) mentioned that if the researcher pilots the interview questions, he/she can get an opportunity to change any question which is not related to the research topic. Therefore, among ten participants one participant did not want to give face to face interviews via zoom meeting because of her hesitation to speak in English. For this reason the researcher took Volume XXIII Issue VIII Version I 76 ( ) Global Journal of Human Social Science - Year 2023 G © 2023 Global Journals Qualities of an Effective Teacher: The Perspectives of Tertiary-Level Students in Bangladesh