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Northern IrelandLife & Health SciencesQuick questions
Investigative Project (A2 1)
Quick questions on Investigative Project: the A2 1 extended investigation portfolio - CCEA Life and Health Sciences
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is a vague evaluation?Show answer
As in AS 1, "be more careful" scores nothing. Name the error, classify it as random or systematic, and give a specific improvement, and comment on sample size and representativeness.
What is q1?Show answer
State what a null hypothesis is and why it is used. [2 marks]
What is q2?Show answer
Explain why repeats are needed before a statistical test can be applied. [2 marks]
What is q3?Show answer
A test result has a probability of 0.10 of arising by chance, tested at the 0.05 level. State whether the null hypothesis is accepted or rejected. [1 mark]
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