In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks. (a) Find how many students obtained marks equal to or more than 7. (b) How many students obtained marks below 4?

The following histogram depicts the marks obtained by 45 students of a class: Figure: Look at the histogram and answer the following questions: What is the class size? How many students obtained less than 10 marks? How many students obtained 30 or more marks but less than 40? What is the interval of highest marks and how many students are there in this interval? If passing marks are 30, what is the number of failures?

The table shows the marks obtained by 25 students in a class test. Find the mean of the marks obtained

Below is the histogram depicting marks obtained by 43 students of a class: 1. Write the number of students getting the highest marks. 2. What is the class size?

A student draws a cumulative frequency curve for the marks obtained by 40 students of a class as shown below. Find the median marks obtained by the students of the class. (FIGURE)

The percentage of marks obtained by a student in the monthly unit tests are given below.Based on this data, find the probability that the student gets more than 70% marks in a unit test.

Use graph paper for this question. The marks obtained by 120 students in an English test are given below : Draw the ogive and hence, estimate : the median marks.

If for some x in R , the frequency distribution of the marks obtained by 20 students in a test is: Then the mean of the marks is:

In Figure, the pie-chart shows the marks obtained by a student in an examination. If the student secures 440 marks in all, calculate his marks in each of the given subjects.

Find the mode of the following frequency table, which gives the marks scored by 40 students in a test:

Find the mean, median and mode of the following marks obtained by 16 students in a class test marked out of 10 marks: 0,0,2,2,3,3,3,4,5,5,5,5,6,6,7 and 8