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Data recording, analysis and presentation

Data recording, analysis and presentation

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Question 262

An astrophysicist conducted an analysis of transient light events detected by an automated survey telescope over a 24-hour period. Each event was classified into one of four categories based on its spectral signature. The results are recorded in the table below.

Table 1: Classification of transient light events

Event classificationFrequency
Supernova215
AGN flare165
Satellite glint85
Unclassified anomaly35

Calculate the percentage of times that a detected event was classified as neither a supernova nor an AGN flare. Show your workings.

[2]
Markscheme

Data recording, analysis and presentation Questions

  1. A Level
  2. /Psychology
  3. /Data recording, analysis and presentation

513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.

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