Planning and Designing Statistical Investigations

Sol is investigating birth rates in different countries. He thinks that European countries have the lowest birth rates. Write a possible hypothesis for Sol to use in his investigation.

Give one reason why this experiment is unlikely to have high validity.

HS2 (High Speed 2) is a faster train service that will link major cities in England. Tom believes most people are against HS2 because it affects countryside and housing along its routes. He decides to gather opinions about HS2. Write down a hypothesis Tom could use for his study.

Tom is doing a statistical study into the amount of homework received by Year 7 and Year 11 students in his school. Write down a hypothesis Tom could use.

One of Tom's questions is, 'How much homework do you receive?' Write down two problems with this question.

Rachel and Mitch own a café. They want to decide whether more staff are needed at certain times. On one day, Rachel records how long customers wait to be served at specific times after 9am. Write down the independent and dependent variables.

Fifteen people apply to take part in an 'IronMan' triathlon. Angelina collects data on each competitor's age, blood pressure, and resting heart rate. Angelina thinks that finishing position in the triathlon (1st, 2nd, 3rd, etc) and resting heart rate will show positive correlation. Write a hypothesis for her to investigate.

Which statistical term means 'the extent to which something gives results that are consistent'?

HS2 (High Speed 2) is a faster train service that will link major cities in England. Tom believes most people are against HS2 because it affects countryside and housing along its routes. He decides to gather opinions about HS2. Write down a hypothesis Tom could use for his study.

Here is one of the questions from Tom's study. Write down two different problems with this question.\n\nHow old are you?\nTick (✓) a box.\n[ ] under 21\n[ ] 21 – 50\n[ ] 51 – 60\n[ ] 61 – 70

Here is an open question from Tom's study.\n\nHow much do you earn? £______\n\nWrite down a problem with this question.