A programmed text in statistics / J. Hine, G. B. Wetherill. Hine, Joan. Wetherill, G. Barrie, joint author. Mathematical statistics Programmed instruction. QA276 .H52 1975 311.2 HIP "A Halsted Press book." London : Chapman and Hall ; New York : Wiley, 1975. 1975. 1975 Text 4 v. : eng