Measures of variation

When you see 'repeatability' and 'precision', which test should you be thinking of?

What is the calculation for standard error of the mean?

Why is standard error a more precise measure of variability than standard deviation?

How are standard deviations about a mean commonly represented? How could this representation be misinterpreted?

What is replicability/repeatability?

What is reproducibility?

What test should you be thinking of when you see key words: repeatability/reproducibility?

What is the calculation for standard deviation?

Define coefficient of variation.

When is it more appropriate to use coefficient of variation rather than standard deviation alone?

What are the two common ways in which standard error may be expressed graphically?

What should you do if you want to be fairly sure that your error bar includes in the true value on a graph?

What is the calculation for a 95% confidence interval?

What is the calculation for a 99% confidence interval?

If you have a 95% confidence interval, what does that mean?

If you want to be more confident that your value falls within a given range, you will increase your interval. However, what are you sacrificing in order to do this?

When can 1.96 (95%) and 2.576 (99%) not be used for calculating confidence intervals?

How do you find the correct value to use if you cannot use 1.96 (95%) or 2.576 (99%) to calculate confidence intervals?

Why can z values (i.e. 1.96 for 95% C.I.) not be used for confidence intervals for samples <30?