Advertisements
Advertisements
प्रश्न
The mean of 15 observations is 32. Find the resulting mean, if the observation is: Decreased by 20%
Advertisements
उत्तर
Given that the mean of 15 observations is 32
resulting mean decreased by 20%
= 32 - `( 20 ) / (100 ) xx 32 `
= 32 - 6.4
= 25.6
APPEARS IN
संबंधित प्रश्न
The mean of 15 observations is 32. Find the resulting mean, if the observation is: Increased by 60%
Find the mean of 8, 12, 16, 22, 10 and 4. Find the resulting mean, if the observations, given above, be: multiplied by 3.
Find the median of: 25, 16, 26, 16, 32, 31, 19, 28 and 35
Find the mean of 8, 12, 16, 22, 10 and 4. Find the resulting mean, if each of the observations, given above, be: increased by 25%
The mean weight of 60 students in a class is 40 kg. The mean weight of boys is 50 kg while that of girls is 30 kg. Find the number of boys and girls in the class.
Find the mean of the following data: 30, 32, 24, 34, 26, 28, 30, 35, 33, 25
(i) Show that the sum of the deviations of all the given observations from the mean is zero.
(ii) Find the median of the given data.
For the set of numbers given below, find mean: 5, 7, 8, 4, 6
For the set of numbers given below, find mean: 3, 0, 5, 2, 6, 2
A boy scored the following marks in various class tests during a terminal exam, each test being marked out of 20.
17, 15, 16, 7, 10, 14, 12, 19, 16, 12
Find his average mean marks.
The mean of 16 natural numbers is 48. Find the resulting mean, if each of the number is multiplied by 4
