The table given below shows the marks obtained by 140 students of a class in a test with maximum marks 100 - Marks 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 No- 4 10 15 28 32 25 16 8 2 A student of the class is selected at random- Find the probability that this student gets

The correct option is C nbsp; ...

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Standard X

Mathematics

Event and Outcome

The table giv...

Question

The table given below shows the marks obtained by 140 students of a class in a test with maximum marks 100.

A student of the class is selected at random. Find the probability that this student gets

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Solution

The correct option is C

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Similar questions

Q. Marks obtained by 100 students of a class are given below. Find out range and coefficient of range of the marks.

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Number of Students	4	10	16	22	20	18	8	2	5

Q. The following table shows the marks obtained by 90 students in a certain examination. Calculate the average marks per students by step deviation method.

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Q. The marks obtained by 90 students in mathematics out of 100 are given below.

Marks	0−20	20−30	30−40	40−50	50−60	60−70	70 and above
No. of students	7	8	12	25	19	10	9

From these students, a student is chosen at random.
What is the probability that the chosen student
(i) gets 20% or less marks?
(ii) gets 60% or more marks?

Q. Find the mode of the marks obtained by 80 students in a class test in English as given below:

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The given table shows the Marks obtained by students in Mathematics.

$\begin{matrix} Marks & No. of Students 0 - 10 & 3 10 - 20 & 7 20 - 30 & 12 30 - 40 & 15 40 - 50 & 20 50 - 60 & 9 60 - 70 & 8 70 - 80 & 16 80 - 90 & 14 90 - 100 & 6 \end{matrix}$

Using the table determine the Lower Quartile by drawing an ogive curve.

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The table given below shows the marks obtained by 140 students of a class in a test with maximum marks 100. A student of the class is selected at random. Find the probability that this student gets

The correct option is C

The table given below shows the marks obtained by 140 students of a class in a test with maximum marks 100.

A student of the class is selected at random. Find the probability that this student gets