marks

my_data<-read.csv("C:/Users/CSE/OneDrive/Desktop/marks.csv")
head(my_data)

##   student.no student.name marks.1 marks.2 marks.3
## 1        101        kittu      90      80      60
## 2        102        lucky      96      86      76
## 3        103       bubbly      95      95      95
## 4        104        aarav      78      82      80
## 5        105        kushi      80      85      90