Advertisements
Advertisements
प्रश्न
Following are the ages of 9 children in a group. Find their (i) mean, (ii) median.
13, 10, 9, 11, 12, 14, 12, 15, 12
बेरीज
Advertisements
उत्तर
(i)
Total of all ages = 13 + 10 + 9 + 11 + 12 + 14 +12 + 15 + 12 = 108
Mean = `"Sum of observations"/"Total number of observations"`
= `(108)/9`
= 12
(ii)
Arranging the numbers in ascending order = 9, 10, 11, 12, 12, 12, 13, 14, 15
Median = `(n + 1)/2`
= `(9 + 1)/2`
= 5th observation
∴ Median = 12
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
