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Finding Median of Grouped Data When Class Intervals Are Not Given

The median of...

Question

The median of first 10 prime numbers is

(a) 11
(b) 12
(c) 13
(d) 14

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Solution

First 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

n = 10 (even)

Hence, the correct option is (b).

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Q. The median of the numbers

6, 14, 12, 8, 10, 9, 11

Q. Find the mean deviation about the median for the data

13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12, 17

.

∣ ∣ ∣ ∣ \begin{matrix} 10! & 11! & 12! 11! & 12! & 13! 12! & 13! & 14! \end{matrix} ∣ ∣ ∣ ∣ =

20

students in a test were as follows:

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Q. Let A = { 10, 11, 12, 13, 14 }; B = { 0, 1, 2, 3, 5 } and

f i : A \to B, i = 1, 2, 3

. State the type of function for the following (give reason):
(i)

f_{1}

= { (10, 1), (11, 2), (12, 3), (13, 5), (14, 3) }
(ii)

f_{2}

= { (10, 1), (11, 1), (12, 1), (13, 1), (14, 1) }
(iii)

f_{3}

= { (10, 0), (11, 1), (12, 2), (13, 3), (14, 5) }

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Finding Median of Grouped Data When Class Intervals Are Not Given

Standard X Mathematics

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