Question

the marks obtained by 12 stud are given below
30 55 50 40 50 60 55 62 55 45 61 65​ calculate mean​

Answer 1

Answer:

30+55+50+40+50+60+55+62+55+45+61+65/12=52.333

Answer 2

Answer:

Step-by-step explanation:

marks of students : 30 , 55 , 50 , 40 , 50 , 60 , 55 ,  62 ,55 , 45 , 61 ,65

mean = sum of frequencies

             total no . of frequencies

mean =  30 + 55 +  50 + 40 + 50 +  60 + 55 +  62 + 55 + 45 + 61 + 65

                                                            12

mean =  628

               12

mean = 52.33..