Question

the marks obtained by 20 in were 13,17,11,18,7,16,11,14,13,12,18,11,9,6,8,17,20,20,10,9, then the mean value of the mark is​

Answer 1

13 ans

Step-by-step explanation:

mean -

mean - 13+17+11++7+16+11+14+13+12+18+11+9+6+8+17+20+20+10+9 / 20

260/20

13 ans