EIP - Choice of Test and Confidence Intervals - Week 8 Flashcards Preview

OD2 - Applied Clinical Training & Research Studies in Vision and Optometry > EIP - Choice of Test and Confidence Intervals - Week 8 > Flashcards

Flashcards in EIP - Choice of Test and Confidence Intervals - Week 8 Deck (8)
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1
Q

Describe what a 95% confidence interval means.

A

If the test was repeated 100 times, 95 of them would contain the true population value.

2
Q

What is the usual estimator of a population mean?

A

Sample mean

3
Q

Will different samples drawn from the same population produce the same or different values of the sample mean?

A

Different values

4
Q

What does the standard error of the mean represent?

A

It is the standard deviation of sample means over all possible samples

5
Q

How can the standard error of the mean be estimated?

A

It is standard deviation divided by the root of the sample size

6
Q

Define statistical significance.

A

How likely it is that the null hypothesis is true

7
Q

By itself, can the p-value tell us how important a given result is?

A

No

8
Q

What do confidence intervals indicate of an estimate?

A

The reliability of an estimate

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