Calculate average marks of students by short-cut method. Marks 10 20 3

1.	Calculate average marks of students by short-cut method. Marks 10 20 30 40 50No. of students 15 10 40 20 15
Answer» ANSWER: The following table SHOWS the marks scored by 140 STUDENTS in an examination of a certain paper: Marks:0-1010-2020-3030-4040-50Number of students:2024403620Calculate the average marks by using all the THREE methods: direct method, assumed mean deviation and shortcut method.

Calculate average marks of students by short-cut method. Marks 10 20 30 40 50No. of students 15 10 40 20 15

Answer»

The following table SHOWS the marks scored by 140 STUDENTS in an examination of a certain paper:

Marks:0-1010-2020-3030-4040-50Number of students:2024403620Calculate the average marks by using all the THREE methods: direct method, assumed mean deviation and shortcut method.

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Calculate average marks of students by short-cut method. Marks 10 20 30 40 50No. of students 15 10 40 20 15

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