3.3c Data Analysis

Question 1

Statistical tests

Answer 1

Statistical tests are used to determine whether the differences between the means are likely or unlikely to have occurred by chance. Consideration should be given to the validity of outliers and anomalous results.

Question 2

Statistically significant result

Answer 2

A statistically significant result is one that is unlikely to be due to chance alone.

Question 3

What are Error bars

Answer 3

Error bars indicate the variability of data around a mean.

Question 4

What does error bars not overlapping mean?

Answer 4

If the treatment mean differs from the control mean sufficiently for their error bars not to overlap, this indicates that the difference may be significant.