Error bars on a graph indicate ____.
A)places where the data is likely wrong
B)places where the researcher is unsure of her results
C)variation in results that cannot be accounted for.
D)variation in a set of data around the average
E)poor experimental technique on the part of the researcher

Question

Quizplus · Accepted Answer

Error bars on a graph indicate the variation in a set of data around the average. They represent the range (maximum and minimum values) within which the true value of the data point is expected to lie within a certain level of confidence. The bars can also show the standard deviation, standard error, or confidence interval of the data. They do not indicate wrong data, unsure results, unaccountable variation, or poor experimental technique.

Error Bars on a Graph Indicate ____