1.

Marks obtained in a test by X standard students of two sections A and B are given below: Marks No. of students in Section A No. of students in Section B 25 – 30 30 – 35 35 – 40 40 – 45 45 – 50 5 10 25 8 2 5 12 20 8 5 Determine: (i) Which section’s performance is better? And (ii) Which section’s performance is more variable?

Answer»

Marks obtained in a test by X standard students of two sections A and B are given below:

















Marks

No. of students in



Section A

No. of students in



Section B

25 – 30



30 – 35



35 – 40



40 – 45



45 – 50

5



10



25



8



2

5



12



20



8



5


Determine: (i) Which section’s performance is better? And (ii) Which section’s performance is more variable?


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