XY3040 Statistics

Statistics is not intuitive

Which of the below is NOT a function of descriptive statistics?

Non-parametric tests are considered more powerful than parametric tests

A Type I statistical error is failing to detect a statistically significant relationship when in fact one does exist

What is the best definition of a p-value of 0.05?

Woohoo! My results are statistically significant! Now I've finally found something important!

If data are normally distributed, then parametric tests should be used

Bar charts are better than histograms for showing distributions of data

Box plots are an analysis of data from a single study

Identify the mode: 112223333444

My p-value is 0.04. What can you conclude?

Specificity is defined as the probability that the test result will be negative when the disease is not present.

How is standard error of the mean calculated?

What would the Bonferroni-adjusted p-value threshold be when there are four comparisons?

A bigger sample leads to a narrower confidence interval

The conventional p-value theshold of 0.05 is chosen due to mathematical rigour and a clear basis

An inverse funnel shape on a Forest plot indicates that publication bias is likely

The need to correct for multiple comparisons is standard practice, but there are others who contend it

What do the 'whiskers' on box plots represent?

Standard Error of the Mean (SEM) is a descriptive statistic