The marks obtained out of 40 by the 20 students were as follows-Find the mean of the marks- Marks xi Number of Students fi 20 2 22 2 28 3 30 4 32 5 37 2 40 2

The correct option is A 30.1 Mean (x̅) = ∑ f_i x_i /N nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nb ...

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Byju's Answer

Standard IX

Mathematics

Mean of Ungrouped Data

The marks obt...

Question

The marks obtained out of 40 by the 20 students were as follows.
Find the mean of the marks.

30.1

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Solution

The correct option is A 30.1

$M e a n (¯ x) = \frac{\sum f_{i} x_{i}}{N}$
= $\frac{602}{20}$
= $30.1$

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The marks obtained out of 40 by the 20 students were as follows. Find the mean of the marks.

The correct option is A 30.1 Mean (¯x)=∑fi xiN = 60220 = 30.1

The marks obtained out of 40 by the 20 students were as follows.
Find the mean of the marks.

The correct option is A 30.1

$M e a n (¯ x) = \frac{\sum f_{i} x_{i}}{N}$
= $\frac{602}{20}$
= $30.1$