The equipment failed to record the reaction time for one trial in an experiment.The reaction times (in milliseconds)for the other trials were 505,630,490,650,and 560.What is the best guess for the missing value?
A)490.00
B)560
C)567.00
D)568.75

Question

Quizplus · Accepted Answer

The best guess for the missing value is the mean (average) of the given reaction times. Adding the given reaction times (505, 630, 490, 650, and 560) gives a total of 2835. Dividing this total by the number of given values (5) gives an average of 567 milliseconds.

The Equipment Failed to Record the Reaction Time for One