Question

Why does increasing the number trials increase confidence in the results of the experiment?

Answer 1

If you increase the number of trials in an experiment it will make the test more valid and legitimate.As you take the same test/experiment once or twice you could see if your results are similar to each other.

Answer 2

Increasing the number of trials reduces the impact of any one imprecise measurement. Using an average value for data points provides a better representation of the true value. {This is the simple answer, That I used and got it correctly}