When walking home on a windy day Egon noticed three green parrots fly overhead. He devised the hypothesis:More green parrots will be spotted on windy days than days with no wind. Egon then spent the next month recording the number of parrots he spotted and he graphed the results: Which of the following statements is correct?

Question

BlackTom AI · Accepted Answer

Consider the scenario and what the graph shows about parrot sightings on two weather conditions.
Option a: 'The data refutes Dexter's hypothesis.' The graph shows a much higher count of parrots on not windy days (~150) compared to windy days (~30). If the hypothesis claimed more parrots on windy days, the observed pattern directly contradicts it, so the data do not support the hypothesis; they refute it.
Option b: 'The data partially supports the hypothesis.' Partial support would mean some evidence aligns with the hypothesis, but the clear difference in counts contradicts it. Since the windy-day counts are substantially lower, this option would exaggerate a relationship that is not present in the data.
Option c: 'The data supports Dexter's hypothesis.' This would require more parrots on windy days, which the graph does not show. The opposite pattern is evident, so this option is incorrect.
Option d: 'The data is not relevant to the hypothesis.' The data directly measures parrot sightings under windy and not windy conditions, which is precisely the test of the hypothesis. Therefore, saying the data are irrelevant would be incorrect.
In summary, the strongest interpretation of the graph is that the data contradict the stated hypothesis, since the observed counts favor not windy days over windy days, negating the proposed relationship.

MUF0052 ICT Unit 2 - Semester 2, 2025 7.7 Quiz: Data science - Supporting a hypothesis

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