TY - JOUR AU - Ikehi, Michael Ejime AU - Onu, Francis M. AU - Ifeanyieze, Florence O. AU - Paradang, Patrick S. AU - Nwakpadolu, Mmachukwu G. AU - Ekenta, Lilian U. AU - Nwankwo, Clara U. PY - 2019/08/24 Y2 - 2024/03/29 TI - Survey on Sample Sizes of Postgraduate Theses in Agricultural Education and Extension in Universities of Nigeria JF - Journal of Extension Education JA - JEE VL - 31 IS - 1 SE - Research Article DO - 10.26725/JEE.2019.1.31.6200-6208 UR - https://extensioneducation.org/index.php/jee/article/view/377 SP - AB - <p><em>The study focused on the representativeness of the sample sizes generated for populations under </em><em>study in survey studies in Agricultural Education and Agricultural Extension. The study was carried out in </em><em>Nigeria. A total of 4561 completed survey theses submitted to the Departments of Agricultural Education </em><em>and Agricultural Extension in federal universities in Nigeria for the award of various postgraduate degrees </em><em>between 2008 and 2018 were studied. The objectives of the study were to report the effect of sample </em><em>size on the confidence level and margin of error of the generated data and to determine the frequently </em><em>cited formula for generating sample sizes and their implications. The most frequently cited method for </em><em>generating sample sizes was reported. Findings further revealed the problems associated with using nonstatistical </em><em>methods to generate sample sizes. The study recommended the use of mathematically proven </em><em>formula in determining sample sizes in survey studies to generate statistically dependable, reliable and </em><em>generalizable data.</em></p> ER -