WORD PROBLEMS on Statistics 6 for Class 9 and 10
Question for practice
The following questions are more helpful for class tenth students for all boards.
The following questions are more helpful for class tenth students for all boards.
Questions 6.
A school has four sections of class X having 40, 35, 45 and 42 students. The mean marks obtained in mathematics test are 50, 45, 40 and 30 respectively for four sections. Determine the overall average of marks per student.
Submit your answer here in the comments or wait for answer
Questions 6.
A school has four sections of class X having 40, 35, 45 and 42 students. The mean marks obtained in mathematics test are 50, 45, 40 and 30 respectively for four sections. Determine the overall average of marks per student.
Submit your answer here in the comments or wait for answer
TOTAL NUMBER OF STUDENTS=40+35+42+45=162
ReplyDeleteTOTAL MARKS OBTAINED=(40X50)+(45X35)+(40X45)+(30X42)
=2000+1575+1800+1260
=6635
OVERALL AVERAGE OF MARKS PER STUDENT=6635/162
=40.9
THEREFORE, OVERALL AVERAGE OF MARKS PER STUDENT IS 40.9
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ReplyDeleteTotal no. of students = 40+35+42+45
ReplyDelete= 162
total marks obtained = (40x50) + (45x35) + (40x45) + (30x42)
= 6635
overall average marks per student =
total marks/total no. of students
= 6635/162
= 40.95