An introduction to probability and statistics for students in the physical, biological, and social sciences. Topics include discrete and continuous probability distributions, sampling theory, tests of hypotheses, point and interval estimation, correlation, and linear regression. Business majors must take this course at W&J. Students with credit for MTH 205 or MTH 245 may not subsequently enroll in MTH 125 without forfeiting MTH 205 or MTH 245 credit.