A great number of researchers have explored the impact of computer assisted teaching of statistics. While most of these studies found that computer assisted teaching of statistics courses significantly improve student achievement level and their attitudes toward statistics, others found that the impact of computer assisted teaching was not significant in these two variables. The purpose of this study was to test if a computer-based teaching of statistics course segment has significant influence on students' achievement levels and their attitudes toward the statistics course. For this purpose, a pretest-post test control experimental design was used. Results of the study showed that use of computers (utilization of statistical software, the internet, visually rich materials etc.) significantly enhances students' achievement and attitude.