From which of the frequency distributions we can write the raw data again?

In finding the median, which column in the frequency distribution must be in order? Why?

Marks of 30 students in mathematics test are given in the adjacent grouped frequency distribution. (i) Into how many groups the data is classified?

Three coins are tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows: Prepare a frequency distribution table for the data given above.

Write mid-values of the following frequency distribution.

Write the formula for finding mean of ungrouped frequency distribution and explain its terms.

Ages of 60 teachers in primary schools of a Mandal are given in the following frequency distribution table. Construct the Frequency polygon and frequency curve for the data without using the histogram. (Use separate graph sheets)

Given below are the marks of students in a less than cumulativae frequency distribution table.. Write the frequencies of the respective classes. Also write the Greater than cumulative frequencies. How many students’ marks are given in the table?

The blood group of 36 students of IX class are recorded as follows Represent the data in the form of frequency distribution table. Which is the most common and which is the rarest blood group among these students?

Given below are the marks of students in a less that cumulativae frequency distribution table. Write the frequencies. How many students marks are given in the table?