The sample standard deviation is an absolutely unbiased estimator of the population standard deviation.

A representation that may occur in many sensory modalities, and that resembles what it represents, is a

a. concept. b. mental image. c. cognitive schema. d. proposition.

In order to help her music students learn the lines of the treble clef in musical notation, Susan has them learn the sentence "Every Good Boy Does Fine," in which the starting letter of each word represents the name of a note. This is an example of ______

a. maintenance rehearsal. b. a mnemonic. c. the serial-position effect. d. pattern recognition.