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Find the Mean of X + 3, X + 5, X + 7, X + 9 and X + 11 - Mathematics

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Sum

Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11.

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Solution

The given values are  x + 3, x + 5, x + 7, x + 9, x + 11

We know, Mean is given by,

Mean = `"Sum of the elements​"/"Total number of elements"`

Here, number of observations = 5.

`"Mean" = ( x + 3 + x + 5 + x + 7 + x + 9 + x + 11 )/(5)`

= `(5x + 35)/(5)`

= x + 7.

Concept: Properties of Mean
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APPEARS IN

Selina Concise Mathematics Class 9 ICSE
Chapter 19 Mean and Median (For Ungrouped Data Only)
Exercise 19 (A) | Q 5 | Page 238
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