Krishna
0

Step 1: Recall the mean definition and look at the given information.

            NOTE: The mean (or arithmetic mean) of n observations (variates)

                          n is given by x_1, x_2, x_3, x_4..................x_n

                 

              Mean =   \frac{\text{ Sum of the variables}}{\text{Total number of variables}}


                        = \frac{x_1+x_2+x_3+x_4.............x_n}{n}


          (Mean: The mean is the average of the numbers. You find the mean by

            adding the numbers together and then dividing by the number of numbers

            in the group.)


Step 2: Count how many numbers are in the group.

                5, 7, 4, 9, 5, 4, 3, 5

                There are 7 numbers


Step 3:  Add all the numbers together

                  5 + 7 + 4 + 9 + 5 + 4 + 3 + 5 = 42


Step 4: Now divide the sum by the number of numbers

              Mean = \frac{42}{7}

              

            The mean = 6