Question

On each trial of an experiment, a participant is presented with a constant soft noise, which is interrupted at some unpredictable time by a slightly louder sound. The time it takes for the participant to react to the louder sound is recorded. The following list contains the reaction times (in milliseconds) for trials of this experiment.

Answer 1

First, order the data set ( low to high)

364 - 384 - 553 - 574 - 600- 684 - 704

(a) Median : middle value

574

(b) mean: add the values and divide by the number of values:

364 + 384 + 553 + 574 + 600 + 684 + 704 = 3,863

7 values

Mean = 3,863 / 7 = 551.9

c) mode is a number that repeats

Since there are no repeating numbers in the data set

zero modes