Interpretation, difficulty 2 of 3
Reading a poll
A random-sample poll finds 52% of voters support a referendum proposal, with a 95% margin of error of ±3.1 percentage points. Which statement is correct?
Practice
Practise until it sticks
Choose a topic, a skill or a difficulty. Calculation exercises have new versions with fresh numbers once you have solved them, so you can practise the method rather than memorise an answer.
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