Advertisements
Advertisements
प्रश्न
Find the median of the following data : 41, 43, 127, 99, 61, 92, 71, 58, 57 If 58 is replaced
by 85, what will be the new median.
उत्तर
Given numbers are
41, 43, 127, 99, 61, 92, 71, 58 and 57
Arrange in ascending order
41, 43, 57, 58, 61, 71, 92, 99, 127
n = 9 (odd)
∴ Median = `((n+1)/2)^(th) value`
= `((9+1)/2)^(th) value`
= `5^(th)value`
= 61
If 58 is replaced by 85
Then new values be in order are
41, 43, 57, 61, 71, 85, 92, 99, 27
n = 9 (odd)
∴ Median = `((n+1)/2)^(th) value`
= `((9+1)/2)^(th) value`
=`5^(th)value`
= 71
APPEARS IN
संबंधित प्रश्न
In a mathematics test given to 15 students, the following marks (out of 100) are recorded:-
41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60
Find the mean, median and mode of this data.
The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x.
29, 32, 48, 50, x, x + 2, 72, 78, 84, 95
The percentage of marks obtained by students of a class in mathematics are : 64, 36, 47, 23,
0, 19, 81, 93, 72, 35, 3, 1. Find their mean.
The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6
of them (in kg) are 52, 54, 55, 53, 56 and 54. Find the weight of the seventh student.
The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x: 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95
Find the value of p, if the mean of the following distribution is 20.
x: | 15 | 17 | 19 | 20+p | 23 |
f: | 2 | 3 | 4 | 5p | 6 |
For which set of numbers do the mean, median and mode all have the same value?
The mean of a, b, c, d and e is 28. If the mean of a, c, and e is 24, What is the mean of band d?
The mean of nine numbers is 77. If one more number is added to it then the mean increases by 5. Find the number added in the data.
A grouped frequency table with class intervals of equal sizes using 250 – 270 (270 not included in this interval) as one of the class interval is constructed for the following data:
268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304, 402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236.
The frequency of the class 310 – 330 is: