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Find the mean and median for the following: 3, 7, 12, 5, 8, 14, 7 - Mathematics

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Question

Find the mean and median for the following:

3, 7, 12, 5, 8, 14, 7

Sum
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Solution

Sum of observations = 3 + 7 + 12 + 5 + 8 + 14 + 7 = 56

Total number of observations = 7

Mean = `"Sum of observations"/"Total number of observations"`

= `56/7`

= 8

Arranging the numbers in ascending order,

3, 5, 7, 7, 8, 12, 14

n = 7 observations

Median = `(n + 1)/2`

= `(7 + 1)/2`

= `8/2`

= 4th

Median = 7

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Chapter 15: Statistics - MISCELLANEOUS EXERCISE [Page 191]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 15 Statistics
MISCELLANEOUS EXERCISE | Q 2. (i) | Page 191
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