%0 Journal Article %T Investigation into Effectiveness of Questionnaire as a Method of Scientific Research %J Education %@ 2162-8467 %D 2012 %I %R 10.5923/j.edu.20120201.03 %X Questionnaires are often used as methods of scientific research and surveys, especially in education and social sciences. This study, therefore investigated the effectiveness of questionnaires as methods of scientific research and survey using the performance of male and female students in engineering drawing at Ladoke Akintola University of Technology, Ogbomoso as a case study.Two sets of data were obtained. The first was obtained through cross-sectional structured questionnaires, which were administered to 98 students that are made of 28.57% females and 71.43% males. The statistical methods used for data obtained consisted of descriptive statistics of frequency counts and chi-square tests. The second set are the secondary data in form of the results or scores for the past five years, which were collected from the examination officers of various departments, through the permission of their heads of departments. Cumulative grade point average (CGPA) of the students was used and the data obtained were analysed using means and standard deviations at 95 % confidence level. Data were further subjected to t-test analyses through the employment of Chi-square tests. Based on the questionnaire, the results of the study showed that hypothesis that says, there is no significant difference between the performance of male and female students in engineering drawing was rejected as X2 calculated for the hypothesis was greater than X2 critical at 95% confident level, while for the second data, statistics revealed that, there was no significant difference in the overall performance between the male and female students in engineering drawing. Since the second set of data was the actual performance of the students, the study concluded that, questionnaires as methods of scientific research and survey, sometimes, may not reflect the true position of things and results from such method should not be absolutely relied upon. %K Effectiveness %K Questionnaire %K Gender %K Performance %U http://article.sapub.org/10.5923.j.edu.20120201.03.html