Combined graph interpretation – UGC NET Question

Statements A and B explain how combined graphs display related quantities with different graphical forms in the same figure. Statement C is correct because separate vertical scales mean each series must be read against its own axis. Statement E is also true; exam questions often focus on relative trends and comparisons rather than exact calculations. Statement D is false since assuming a common scale when there are two axes can lead to misinterpretation. Therefore, A, B, C and E only are correct, as given in option D.

Option A:
Option A is incomplete because it includes only A, B and C and omits E, which stresses the interpretative focus on trends that is common in NET data questions.

Option B:
Option B is incorrect because it omits B (a correct example of bar–line encoding), so it does not include all true statements even though A, C and E are true.

Option C:
Option C is incorrect because it excludes A (the general definition of combined graphs) and keeps only B, C and E, making it incomplete for “select correct statements”.

Option D:
Option D is correct as it gathers the correct structural and interpretative points about combined graphs and explicitly excludes D, which wrongly assumes a single scale for all series.