Discovering whether programs work
Subtitle: a guide to statistical methods for program evaluation
By: Laura Irwin Langbein.
Series: The Goodyear public policy analysis and management series
Publisher: Goodyear Pub. Co.
Published: 1980
Place of publication: Santa Monica, Calif
Language: eng
Number of pages: 184
Subjects: Social sciences -- Statistical methods.; Evaluation research (Social action programs)
Notes: Includes bibliographies and index.