Acousticians designing performance halls choose the fabric for seat covers and curtains very carefully, and even try to predict the type of clothing patrons will wear to performances, due to the ability of fabric to _________ sound

The appropriate graph for a correlation is a:

a. frequency polygon. b. scatter diagram. c. line graph. d. bar graph.

The case of H.M. illustrates the ____ design used in a retrospective way

a. time series design b. matched subjects procedure c. one-shot case study d. reversal design