Statistics

Q.

If x is the mean of data 3, x, 2 and 4, then the mode is .

1. 3

Q. Marks obtained by 100 students in an examination are given in the table:

Sl. No.	Marks obtained	Number of students
1	25	20
2	30	20
3	35	40
4	40	20

What would be the mean, median and mode of the marks obtained by the students?

1. Mean 33; Median 35; Mode 40
2. Mean 35; Median 32; Mode 40
3. Mean 33; Median 35; Mode 35
4. Mean 35; Median 32; Mode 35

Q. A sample of 15 data is as follows 17, 18, 17, 17, 13, 18, 5, 5, 6, 7, 8, 9, 20, 17, 3. The mode of the data is

1. 4
2. 13
3. 17
4. 20

Q. The marks obtained by a set of students are 38, 84, 45, 70, 75, 60, 48. The mean and median marks, respectively, are

1. 45 and 75
2. 55 and 48
3. 60 and 60
4. 60 and 70

Q.

The spot speed (expressed in km/hr) observed at a road section are 66, 62, 45, 79, 32, 51, 56, 60, 53 and 49. The median speed expressed in km/hr is .
[Note Answer with one decimal accuracy]

1. 54.5

Q. The number of emails received on six consecutive days is 11, 9, 18, 18, 4 and 15, respectively. What are the median and the mode for these data?

1. 18 and 11 respectively
2. 13 and 18 respectively
3. 13 and 12.5 respectively
4. 12.5 and 18 respectively