Typical survey sample sizes are about 1000 people. Why is this?
Some short statements about hypothesis testing: are they true, false, or somewhere in between?
How effective are hypothesis tests at showing that our null hypothesis is wrong?
This pilot collection of resources is designed to introduce key statistical ideas and help students to deepen their understanding.
How can you time the reaction timer?
What information helped medical pioneers decide on the cause of a disease? Especially in a time before microscopes were as powerful as they are today ?
How many trials should we do in order to accept or reject our null hypothesis?
I need a figure for the fish population in a lake. How does it help to catch and mark 40 fish?
How was the data for this problem compiled? A guided tour through the process.
This article discusses how a survey company carries out its surveys and some of the issues involved.
"Too much sleep is deadly" proclaimed the newspaper headline. Is this true?
Is the age of this very old man statistically believable?
How would you massage the data in this Chi-squared test to both accept and reject the hypothesis?