a) Explain what is meant by the word ‘population’.
Jo needs to conduct a survey to investigate the type of kitchen cleaner people prefer. She wants a random sample of people who use kitchen cleaners. She decides to stand in a busy high street on a Saturday afternoon and attempt to get shoppers to answer her questions
b) State the sampling technique Jo has used.
Having been unsuccessful in obtaining enough data from her previous attempt, Jo decides to look at the electoral register for a town and selects a sample of 50 households to contact. She decides to select every 10th name on the electoral register to add to her sample.
c)State the sampling technique Jo has used.
d)Give two reasons why Jo may again be unsuccessful getting the data required using this sampling technique.
e)Suggest an alternative method for Jo to use and explain your reasons