#16

Doestalkingwhile walkingslowyou down?Supposea studyconsideredmean cadence(stepsper minute)forsubjects usingnowalking device,astandard walker,anda rollingwalker. In addition, the cadence was measured when the subjects had to perform dual tasks. Thesecond taskwas torespond vocallyto a signalor respondto aninterview questionwhile walking. Cadencewasmeasuredfor subjectswhowerejust walking(usingnowalking device,astandardwalker, orarollingwalker), forsubjectsrequiredto respondtoasignal, andforsubjectsrequired torespondtoan interviewquestionwhilewalking. How many cells are there in the data table?

Group of answer choices

1

12

9

7

8