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A graph shows rising average scores but the number of students differs each year. What should be checked before drawing a conclusion?

Answer and explanation

Correct answer: Sample size and comparability

The governing concept is responsible interpretation of summarized data. An average alone does not show whether the groups are comparable; different sample sizes, student selection, attendance, or group composition may affect the result. Option A is correct because sample size and comparability should be checked before claiming genuine improvement. Colour, image position, and title font do not establish whether the comparison is valid.

Related tags

Average ScoreSample SizeGraph InterpretationData LiteracyData Interpretation And Basic VisualizationArtificial IntelligenceClass 9 Mcq

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