EFFECT OF COMPUTER GRAPHICS ON JUNIOR SECONDARY SCHOOL STUDENTS' RETENTION IN STATISTICS IN ENUGU EDUCATION ZONE OF ENUGU STATE
Keywords:computer graphics, teaching statistics, computer aided instruction
This study was aimed at investigating the effect of Computer Graphics, a computer aided instruction strategy on junior secondary school students' retention in statistics. It was a quasi-experimental study, pretest-posttest, non equivalent groups design. A total of 389 JSSII students were sampled from four secondary schools in Enugu education zone. The schools were made up of two rural and two urban schools drawn by purposive sampling while eight intact classes were randomly sampled and assigned experimental and control groups. Statistics Achievement Test (SAT) was used for data collection. The instrument had 30 items.
It was validated by three research experts. A reliability of 0 .65 was obtained for SAT using Kuder Richardson 20 (KR-20) formula. Two research Questions and three hypotheses guided
the study. Mean and standard deviation were used to answer the research questions while the hypotheses were tested at .05 level of significance using analysis of covariance (ANCOVA). Major findings of the study revealed that students in the experimental group taught statistics with computer graphics retained higher than their counterparts who were taught with expository method. There was no significant interaction between teaching strategy and school location with regards to students' retention in statistics. It was recommended, among
other things, that mathematics teachers should use computer graphics for teaching statistics in junior secondary schools.