The error bars on the graph indicate that the measurements taken at
A - VCE - SSCE Biology - Question 14 - 2020 - Paper 1
Question 14
The error bars on the graph indicate that the measurements taken at
A. 38 °C were more valid than at 35 °C.
B. 52 °C were more precise than at 46 °C.
C. 46 °C were m... show full transcript
Worked Solution & Example Answer:The error bars on the graph indicate that the measurements taken at
A - VCE - SSCE Biology - Question 14 - 2020 - Paper 1
Step 1
A. 38 °C were more valid than at 35 °C.
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Answer
Validity refers to how well a test measures what it is supposed to measure. While the error bars could indicate some differences in the measurements, without specific data from the graph, we cannot definitively conclude that 38 °C is more valid than 35 °C.
Step 2
B. 52 °C were more precise than at 46 °C.
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Precision refers to the consistency of measurements. If the error bars for 52 °C are smaller compared to those for 46 °C, it would suggest greater precision. This could be validated by directly comparing the error bars but is not definitively known from the information given.
Step 3
C. 46 °C were more accurate than at 55 °C.
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Answer
Accuracy indicates how close a measurement is to the true value. If the error bars at 46 °C are narrower than at 55 °C, it could suggest higher accuracy at 46 °C. This fits the marking scheme as the correct answer.
Step 4
D. 58 °C had more random errors than 42 °C.
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Answer
Random errors can be implied from wider error bars. If the error bar at 58 °C is larger than that at 42 °C, it suggests greater random error at 58 °C, but this cannot be determined solely based on the description.
