Question

the scores in mathematics test ( out of 25) of 15 students are as follows: 19,25,23,20,9,20,15,10,5,16,25,20,24,12,20 find the mean of this data?​

Answer 1

Answer:

19, 25, 23, 20, 9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20

(add all of the numbers) = 243

Mean - 243 ÷ 15 = 16.2

Answer 2

Answer: 17.533

Step-by-step explanation:

Mean = Sum of all observations

            total no:of observations

         = 19+25+23+20+9+20+15+10+5+16+25+20+24+12+20

                                                15

        =    263  

               15

        =  17.533

HOPE THIS HELPS.....