The marks obtained by students in a Maths test are given below. Find their mode.
18,19,17,12,20,19,18,17,18,11.

Construct a frequency distribution table for the following marks obtained by 25 students in a history test in class VII of a school: 9,17,12,20,9,18,25,17,19,9,12,9,12,18,17,19,20,25,9,12,17, 19,19,20,9 What is the range of marks? What is the highest mark? Which mark is occurring more frequently?

Construct a frequency distribution table for the following marks obtained by 25 students in a history test in class VI of a school: 9,17,12,20,9,18,25,9,12,12,18,17,19,20,25,9,12,17,19,20,9 What is the rang of marks? What is the highest mark? Which mark is occurring more frequently?

Find the mode of 14,25,14,28,18,17,18,1423,22,14,18.

The marks (maximum marks 100) obtained by 20 students in a test are given below : Find the mean marks of the 20 students.

The marks obtained by 15 students in an examination are given below : 40, 20, 24, 19,20, 35, 12, 48, 29, 40, 45, 48, 42, 23, 35. Find the average mark of the students.

Let the marks obtained by 30 students of a class in a test be 38, 26, 4, 32, 20, 22, 11, 47, 12, 23, 8, 2, 10, 8, 12, 17, 2, 19, 16, 42, 40, 13, 47, 38, 17, 27, 30, 6, 23, 18. Arrange the data in grouped frequency distribution, using groups 0-10, 10-20 e tc.

Find the mode of the data 15,14,19,20,14,15,16,14,15,18,14,19.

The marks obtained out of 50, by 102 students in a Physics test are given in the frequency table below: Marks (x) : 15 20 22 24 25 30 33 38 45 Frequency (f) : 5 8 11 20 23 18 13 3 1 Find the average number of marks.