While computing the mean of the grouped data, we Assume that the frequencies are
A. evenly distributed over the classes

B. centred at the class marks of the classes

C. centred at the lower limits of the classes

D. centred at the upper limits of the classes

Each question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

The mode of the above data is 12.4.

The value of the variable which occurs most often is the mode.

Find the mean of the following data:

Find the mean of the following data:

Find the mean, median and mode of the following data:

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution:

Consider the following frequency distribution:

The upper limit of the median class is

The following table gives the number of branches and number of plants in the garden of a school.

In the first proof reading of a book containing 300 pages the following distribution of misprints was obtained:

Find the average number of misprints per page.