Question

find the mean of the following data: Marks: less than 0 less than 10 less than 20 less than 30 less than 40 less than 50 No. of students 0 7 19 32 42 50

Answer 1

Answer:

REFER TO THE ATTACHMENT.

HOPE IT HELPS YOU!!!

Answer 2

Answer:

the answer is 25 marks

Step-by-step explanation:

first you find the mid term the find d the Formula of d is d=x-a the value of a is choos any no.of mid term then find fd then find mean the Formula is A+sigma fd/sigma f