Analyzing Evidence Answers

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Lack of accuracyLack of precision✔ Outliers

Answers:
Data Set I: 190, 315, 198, 194, 200, 195, 540, 201, 197, 193 (“correct” value = 195):Outliers
Data Set II: 50, 49, 48, 51, 52, 50, 50, 49, 51, 53 (“correct” value = 65):Lack of accuracy
Data Set III: 12, 18, 9, 13, 14, 19, 11, 20, 19, 12 (“correct” value = 15):Lack of precision
3

✔ Lack of precisionLack of accuracyOutliers

A
✔ Lack of precision
B
Lack of accuracy
C
Outliers
4

Briefly explain why experiments having faulty design or inconsistent data are problems for scientists. List several reasons.

Answer:

Faulty design can introduce bias or fail to test the question properly, leading to invalid conclusions. Inconsistent data make results unreliable and difficult to reproduce. These problems can cause scientists to reach incorrect conclusions and waste time and resources.

5

Which of the following did you include in your answer? Select all that apply.

A
Conclusions can’t be trusted.
B
Experiment may not be repeatable.
C
Data may be incorrect.
D
Data may not reflect actual situation.
E
Data may not answer question asked.
F
Results may be biased.
6

List the three components of a scientific argument, describing each in a few words.

Answer:

Claim: the conclusion or answer to a question. Evidence: data or observations that support the claim. Reasoning: an explanation of how the evidence supports the claim.

8

Briefly explain why it is necessary to critique a scientific argument before it is accepted.

Answer:

It is necessary to critique a scientific argument to check that its evidence is reliable and its reasoning is sound, and to identify possible errors or bias before accepting its conclusion.

9

Question text not available

Answers:
Data Set I: 190, 315, 198, 194, 200, 195, 540, 201, 197, 193 (“correct” value = 195):Outliers
Data Set II: 50, 49, 48, 51, 52, 50, 50, 49, 51, 53 (“correct” value = 65):Lack of accuracy
Data Set III: 12, 18, 9, 13, 14, 19, 11, 20, 19, 12 (“correct” value = 15):Lack of precision
10

Which of these reasons for critiquing a scientific argument did you include in your answer? Check all that apply.

A
Catches errors.
B
Gives confidence in final evidence.
C
Ensures that conclusions fit evidence.
D
Makes scientist convince other scientists.
E
Makes scientist check and justify own work.
11

Lack of precision✔ Lack of accuracyOutliers

A
Lack of precision
B
✔ Lack of accuracy
C
Outliers

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