Q2 of 174 Page 608

Look at the table given below:

















Marks



0-10



10-20



20-30



30-40



No. Of students



8



11



7



3



The true upper limit of the class 10-20 is

As the class intervals are given in exclusive form so the true upper class limit of the class 10 – 20 is 20.

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43

Which is false?

 1

Look at the table given below:

















Marks



0-10



11-20



21-30



31-40



No. Of students



6



9



11



4



The true lower limit of the class 21-30 is

 3

Look at the table given below:

















Marks



0-10



11-20



21-30



31-40



No. Of students



6



9



11



4



What is the class size of the class 11-20 in this table?

 4

What is the class mark of class 21-30 in the table of Q.3 ?