Question

1 ) Marks obtained by 20 students in an examination given : 20 , 25 , 35 , 36 , 34 , 14 , 5 9 , 17 , 27 , 50 , 45 , 44 , 37 , 33 , 45 , 50 , 24 , 38 , 50. Find the mean marks obtained * a ) 30.9 b ) 28.9 c ) 31.9​

Answer 1

Answer:

c) 31.9

Step-by-step explanation:

mean (x) = sum of all obeservation / number of observation

mean =( 20+25+35+36+34+14+5+9+17+27+50+45+44+37+33+45+50+24+38+50)/ 20

mean =638/ 20

mean = 31.9