class 11 statics economic ques are the average marks of 50 students in class 4 the pass result of 40 student who took up a class test is given below calculate meann marks of 10 students who failed
Answers
Answer:
" FOLLOW " me...ppz
" BRAINLIEST " me.plz....
Explanation:
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students = 5.16 × 50 = 258
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students = 5.16 × 50 = 258Number of students who passed a class test = 10 + 10 + 9 + 6 + 4 + 3 = 42 Total marks of 42 students = (10 × 4) + (10 × 5) + (9 × 6) + (6 × 7) + (4 × 8) + (3 × 9) = 245 Number of students failed = Total no.of students - Failed students = 50 - 42 = 8 Total marks of the failed students = Total marks of 50 - Total marks of 42 students
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students = 5.16 × 50 = 258Number of students who passed a class test = 10 + 10 + 9 + 6 + 4 + 3 = 42 Total marks of 42 students = (10 × 4) + (10 × 5) + (9 × 6) + (6 × 7) + (4 × 8) + (3 × 9) = 245 Number of students failed = Total no.of students - Failed students = 50 - 42 = 8 Total marks of the failed students = Total marks of 50 - Total marks of 42 students= 258 - 245 = 13
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students = 5.16 × 50 = 258Number of students who passed a class test = 10 + 10 + 9 + 6 + 4 + 3 = 42 Total marks of 42 students = (10 × 4) + (10 × 5) + (9 × 6) + (6 × 7) + (4 × 8) + (3 × 9) = 245 Number of students failed = Total no.of students - Failed students = 50 - 42 = 8 Total marks of the failed students = Total marks of 50 - Total marks of 42 students= 258 - 245 = 13∴ Average marks of the failed students = Total marks of the failed students/No.of failed students
Total number of students written a class test = 50 Average marks of all the 50 students = 5.16 Total marks of 50 students = Average marks of the students × No.of students = 5.16 × 50 = 258Number of students who passed a class test = 10 + 10 + 9 + 6 + 4 + 3 = 42 Total marks of 42 students = (10 × 4) + (10 × 5) + (9 × 6) + (6 × 7) + (4 × 8) + (3 × 9) = 245 Number of students failed = Total no.of students - Failed students = 50 - 42 = 8 Total marks of the failed students = Total marks of 50 - Total marks of 42 students= 258 - 245 = 13∴ Average marks of the failed students = Total marks of the failed students/No.of failed students= 13 / 8 = 1.625