statistics

following is an incomplete distribution having model marks as 44 marks .marks:0-20:5 20-40;18 40-60;? 60-80;12 80-100;5 what would be the mean marks
Replies (1)
Since 44 is the modal mark, 40-60 becomes the modal class. Use the mode formula and find the unknown frequency, which is 20. Then use the mean formula and you will get the answer as 48. :)

Leave a Reply

Your are not logged in . Please login to post replies

Click here to Login / Register