Mean of Ungrouped Data
Trending Questions
Q. The marks obtained out of 40 by the 20 students were as follows.
Find the mean of the marks.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/514820/original_wqwq.png)
- 30.1
- 30
- 29
- 31
Q. Yield of soyabean per acre(in quintals) in Mukund's field for 9 years was 7, 9, 5, 8, 8, 9, 6, 4, 7. Find the mean yield per acre.
- 6 quintals
- 8 quintals
- 7 quintals
- 9 quintals
Q. The mean of first n natural numbers is 5n9. Find n.
- 4
- 9
- 5
- None of these
Q.
From the given data, find the speed of Jack on Monday (in km/hr).
- 4 km/hr
- 5 km/hr
- 6 km/hr
- 7 km/hr
Q. Arithmetic mean is same as the of the data set.
- mean
- median
- mode
Q. Question 12
If the mean of the observations x, x+3, x+5, x+7 and x+10 is 9, then mean of the last three observation is:
A) 1013
B) 1023
C) 1113
D) 1123
If the mean of the observations x, x+3, x+5, x+7 and x+10 is 9, then mean of the last three observation is:
A) 1013
B) 1023
C) 1113
D) 1123
Q. The arithmetic mean of the scores of a group of students in a test was 52 The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31 The mean score of the remaining 55% is
- 45%
- 50%
- 54.6% (approx)
- 51.4% (approx)
Q. Question 11
The mean marks (out of 100) of boys and girls in an examination are 70 and 73, respectively. If the mean marks of all the students in that examination is 71, find the ratio of the number of boys to the number of girls.
The mean marks (out of 100) of boys and girls in an examination are 70 and 73, respectively. If the mean marks of all the students in that examination is 71, find the ratio of the number of boys to the number of girls.
Q. In a class of 100 students the mean marks obtained in a certain subject is 30 and in another class of 50 students the mean marks obtained in the same subject is 60. The mean marks obtained by the students of two classes taken together is
- 40
- 45
- 48
- 50