The teachers tell the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest marks are 87. What is the lowest Mark?

The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest mark is 87. What is the lowest mark?

The teacher tells the students in class that the highest marks obtained by a student in the class is 7 more than twice the lowest marks. if the highest mark is 93 then what is the lowest mark ?

Construct a histogram for the marks obtained by 600 students in the VII class annual examinations.

Following are the marks obtained by 50 students in a unit test, which is administered for 10 marks. Find the mode of the data.

It depends upon the demand of the situation whether we are intersted in finding the acerage marks obtained by the students or the marks obtained by most of the students . What do we find in the first situation ?

It depends upon the demand of the situation whether we are intersted in finding the acerage marks obtained by the students or the marks obtained by most of the students . What do we find in the second situation ?

In a class test, the sum of the marks obtained by Ravi in Mathematics and Science is 28. Had he got 3 marks more in Mathematics and 4 marks less in Science, the product of his marks would have been 180. Find his marks in the two subjects.

All the student of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the student. Which of the following statistical measures will not change even after the grace marks were given?