AP Bio- Experimental Design & Biostats

Front

What does 'No Overlap' mean in statistical analysis?

Back

It means that there is a statistically significant difference between the two groups.

Front

What is a Null Hypothesis?

Back

A statement that indicates there is no effect or no difference, such as 'Changing the time you eat breakfast will have no effect on your daily mood.'

Front

Which statement is NOT an example of an alternative hypothesis?

Back

Temperature of water has no effect on the speed of swimmers.

Front

What conclusion can be drawn if a graph shows no significant impact of exercise on blood plasma prolactin?

Back

Exercise has no significant impact on blood plasma prolactin.

Front

How can you determine if there is a significant statistical difference between samples based on error bars?

Back

If the error bars do not overlap, there is a significant difference.

Front

What is an Alternative Hypothesis?

Back

A statement that suggests a potential effect or difference, opposite to the null hypothesis.

Front

Define 'Statistical Significance'.

Back

A statistical statement of how likely it is that an obtained result occurred by chance.

Front

What is the purpose of a control group in an experiment?

Back

To provide a baseline for comparison against the experimental group.

Front

What does it mean if a p-value is less than 0.05?

Back

It indicates that the results are statistically significant and unlikely to have occurred by chance.

Front

What is the role of randomization in experimental design?

Back

To eliminate bias and ensure that each participant has an equal chance of being assigned to any group.