The following table gives the marks scored by 50 students in a class-test:
Find the mean marks scored by a student in the class-test.
Answers
Mean marks scored by a student in the class-test is 304.
Step-by-step explanation:
We are the following table which gives the marks scored by 50 students in a class-test below;
Marks No. of students (f) X
0 - 100 2 50 100
100 - 200 8 150 1200
200 - 300 12 250 3000
300 - 400 20 350 7000
400 - 500 5 450 2250
500 - 600 3 550 1650
Total 50 15200
Now, the mean of the frequency distribution is given by the following formula;
Mean, =
=
= 304
Hence, the mean marks scored by a student in the class-test is 304.