The marks of $20$ students in a test were as follows:
$5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20.$
The mean is

14

No worries! We‘ve got your back. Try BYJU‘S free classes today!

13

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

12

No worries! We‘ve got your back. Try BYJU‘S free classes today!

15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $13$
Marks are: $5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20.$
Sum of marks $= 260$
Number of students $= 20$
Mean $= \frac{Sum}{Numbers} = \frac{260}{20} = 13$

Suggest Corrections

Similar questions

The marks of

20

students in a test were as follows:

5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20

The mode is

The marks of

20

students in a test were as follows:

5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20

The median is

Question 93

The marks obtained (out of 20) by 30 students of a class in a test are as follows :
14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14,
19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20.
Preparing a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Q. Marks of

12

students in a unit test are given as

4, 21, 13, 17, 5, 9, 10, 20, 19, 12, 20, 14

. Assume a mean and calculate the arithmetic mean of the data. Assume another number as mean and calculate the arithmetic mean again. Do you get the same result? Comment

Q. The mark obtained by

15

students of a class test are

12, 14, 07, 09, 23, 11, 08, 13, 11, 19, 16, 24, 17, 03, 20

. Find
(i) the mean of their marks.
(ii) the mean of their marks when the mark of each student are increased by

4

Join BYJU'S Learning Program

The marks of 20 students in a test were as follows:5,6,8,9,10,11,11,12,13,13,14,14,15,15,15,16,16,18,19,20.The mean is

The correct option is B 13Marks are: 5,6,8,9,10,11,11,12,13,13,14,14,15,15,15,16,16,18,19,20.Sum of marks =260Number of students =20Mean =SumNumbers=26020=13

The marks of $20$ students in a test were as follows:
$5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20.$
The mean is

The correct option is B $13$
Marks are: $5, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19, 20.$
Sum of marks $= 260$
Number of students $= 20$
Mean $= \frac{Sum}{Numbers} = \frac{260}{20} = 13$