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351. For what value of x, is the mode of the following data is 9 ? 5, 8, 9, 3, 9, 8, 7, 6, 8, 9, x, 4.

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352.

For what value of x, is the mode of the following data is 11?

8, 9, 11, 10, 12, 14, 11, 14, 15, 14, x, 11.

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353.

Find the median of the following data :
31, 15, 47, 91, 12, 56, 29, 61, 65, 55.

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354. Find the mean of the first six prime numbers.

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Solution not provided.

Ans. 34, 33

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356.

Find the mode of the following:
3, 5, 6, 6, 5, 3, 5, 3, 6, 5, 3, 5, 7, 6, 5, 7, 5.

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357.

If the mean of the following data is 21.5, find the value of k.

x	5	15	25	35	45
y	6	4	3	K	2

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358. The numbers 2, 3, 4, 4, 2x + 1, 5, 5, 6, 7 are written in ascending order. If the median is 5, find x. Hence, find mode.

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359.

Find the median of the following data: 18, 37, 24, 59, 41, 26, 63, 45, 57, 29.
In the above data, if 37 replaced by 73, find the new median.

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360.

If the mean of the following data is 25, find the value of k.

x	5	15	25	35	45
f	3	k	3	6	2

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