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Oak National Academy
12 questions
A stratified ___ is where a representative sample is taken from each stratum.
Select all the biased questions.
Jacob writes the question: "How many siblings do you have?". What should Jacob consider when making response boxes for this question?
A pizza company asks: In your opinion, how would you rate the sizes of pizza by our rivals?: [Satisfactory, Small, Microscopic]. What is wrong with their question?
Select all the questions that are considered to be asking for personal information.
A supermarket manager wants to find out how satisfied customers with the store. He asks customers: "Do you not find it easy to not not overspend in this store?". Criticise their question.
You should use a ___ sample when the population consists of several distinct groups such as year groups in a school or people studying different courses.
A film streaming company designs this questionnaire. How often do you get download films? [once or twice /often / all the time] How could their question be improved?
The owner of a cinema in Oakfield wants to see if they can expand to the town of Rowanwood. They ask 10 of their friends in Oakfield if they would use a new cinema. How can they improve their sample?
The owner of a bakers in Oakfield wants to find out what their customers think of their new cakes. Match each type of sample to a suitable example.
A conservationist collects a stratified sample of 35 birds from a lake. They collect 5 swans, 12 geese, 8 moorhens and some ducks. There are 20 swans on the lake. How many ducks are on the lake? ___
A quality controller takes a stratified sample of 16 type A batteries and 12 type B batteries. The factory produce 2545 type A batteries. They produce ___ of type B to the nearest whole battery.
