Advertisements
Advertisements
प्रश्न
Ages of 15 students in 8th standard is 13, 12, 13, 14, 12, 13, 13, 14, 12, 13, 13, 14, 13, 12, 14. Find the mean age of the students
Advertisements
उत्तर
Aarithmetic Mean = `"Sum of all observations"/"Number of observations"`
= `(13 + 12 + 13 + 14 + 12 + 13 + 13 + 14 + 12 + 13 + 13 + 14 + 13 + 12 + 14)/15`
= `195/15`
= 13
Mean age of the students = 13
APPEARS IN
संबंधित प्रश्न
The data 6, 4, 3, 8, 9, 12, 13, 9 has mean 9.
If `barx` is the mean of x1, x2 ............xn and `bary` is the mean of y1, y2, …….yn and `barz` is the mean of x1, x2 ............xn, y1, y2, ……….yn then `barz` =?
In a week, temperature of a certain place is measured during winter are as follows 26°C, 24°C, 28°C, 31°C, 30°C, 26°C, 24°C. Find the mean temperature of the week
If the mean of five observations x, x + 2, x + 4, x + 6, x + 8, is 11, then the mean of first three observations is
The average of integers between −10 to 10 is __________
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the mean mark
The mean height of 11 students in a group is 150 cm. The heights of the students are 154 cm, 145 cm, Y cm, Y + 4 cm, 160 cm, 151 cm, 149 cm, 149 cm, 150 cm, 144 cm and 140 cm. Find the value of Y and the heights of two students?
Mean of the data is always from the given data.
Mean of the observations can be lesser than each of the observations.
The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacher is appointed in his place. If the mean age of the teachers in this school now is 39 years, then the age (in years) of the newly appointed teacher is ______.
