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The table shows the distribution of marks obtained by some students in a test What ...

The table shows the distribution of marks obtained by some students in a test
Marks 0-9 10-19 20-29 30-39 40-49
Frequency 4 12 16 6 2



What is the upper class boundary of the upper quartile class?

A. 49.5
B. 39.5
C. 29.5
D. 19.5




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