Can you decide whether these short statistical statements are always, sometimes or never true?
A geographical survey: answer the tiny questionnaire and then analyse all the collected responses...
Can you work out which spinners were used to generate the frequency charts?
How many thousand people does each dot represent?
I need a figure for the fish population in a lake. How does it help to catch and mark 40 fish?
Use your skill and judgement to match the sets of random data.
Where do people fly to from London? What is good and bad about these representations?
Displaying one-variable and two-variable data can be straightforward; what about three or more?
"Too much sleep is deadly" proclaimed the newspaper headline. Is this true?
How can we find out answers to questions like this if people often lie?
Are these statistical statements sometimes, always or never true? Or it is impossible to say?
Some short statements about hypothesis testing: are they true, false, or somewhere in between?
How many trials should we do in order to accept or reject our null hypothesis?
How effective are hypothesis tests at showing that our null hypothesis is wrong?
Can you create random variables satisfying certain conditions?
Are these scenarios described by the binomial distribution?
When is an experiment described by the binomial distribution? Why do we need both the condition about independence and the one about constant probability?
Typical survey sample sizes are about 1000 people. Why is this?
This article explores the process of making and testing hypotheses.
What do we mean by probability? This simple problem may challenge your ideas...
This article discusses how a survey company carries out its surveys and some of the issues involved.
This article offers an advanced perspective on random variables for the interested reader.
This article explores the meaning of hypothesis tests, and also some of the major difficulties in interpreting them
How was the data for this problem compiled? A guided tour through the process.