Collecting Data and Sampling (Leaving Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a population in statistical investigations?
What is a population in statistical investigations?
Everything or everybody that could be involved in a study
What is the main purpose of using a sample?
What is the main purpose of using a sample?
To draw conclusions about the population
What is the main problem if a sample size is too small?
What is the main problem if a sample size is too small?
Results may not be reliable
What is the main problem if a sample size is too large?
What is the main problem if a sample size is too large?
Data takes too long to collect and analyse
What is bias in sampling?
What is bias in sampling?
Sample not properly selected
What happens if bias exists in a sample?
What happens if bias exists in a sample?
Conclusions won't reflect the population
Why is surveying people outside a casino about gambling biased?
Why is surveying people outside a casino about gambling biased?
Location favours people involved in gambling
Why is surveying only Leaving Cert students about uniforms biased?
Why is surveying only Leaving Cert students about uniforms biased?
Doesn't include all relevant student groups
What is a simple random sample?
What is a simple random sample?
Every member has equal chance of selection
Why is simple random sampling important?
Why is simple random sampling important?
It's one of the best ways to avoid bias
Which methods can select a simple random sample?
Which methods can select a simple random sample?
Hat, random table, number generator
Why is surveying people outside a cinema about cinema habits biased?
Why is surveying people outside a cinema about cinema habits biased?
Only questions people already going