The ratio of marks obtained by Amal, Bimal and Komal in an examination is ` 12 : 8 : 15`. Find the marks obtained by Bimal and Komal, if Amal scored 15 marks less than that of Komal.

Marks obtained in an examination is

The marks obtained by 41 students in an examination in Math are given below: Find the average of the marks obtained by them.

The marks obtained (out of 30) by five students in a test are 20, 15, 25, 18, and 22. Find the average marks obtained.

Study the pie chart given below depicting the marks scored by a student in an examination out of 540. Find the marks obtained by him in each subject.

A comparison of marks socred by Gauri , Aaban, Seerat and Alvina in an examination is as follows I. Gauri has scored 15 marks ess than Aaban. II. Gauri has scored 20 marks more than Seerat . III. Alvina has scored 10 marks less than Seerat To decide who has scored the highest marks, identify the statement from those given in the alternatives in respect of sufficiency of data

Marks obtained in mathematics examination are given below:(ii)Find variance of the marks.