Against all odds: Inside Statistics, Unit 6, Standard Deviation
directed by Maggie Villiger, fl. 1999; presented by Pardis Sabeti, 1975-; produced by Maggie Villiger, fl. 1999, Chedd-Angier Production Company, Inc., in Against all odds: Inside Statistics, Unit 6 (District of Columbia: Annenberg Learner, 2014), 9 mins