Now we can calculate the mean range, by dividing the sum of the ranges by the number of subgroups. Once again, the number of subgroups (25) has been entered into the appropriate box for you. Complete the calculation and enter your result into the box outlined in red below. Since the subgroup ranges are calculated as whole numbers, the mean range should be rounded to 1 decimal place. When you have done this, click the button to check your answer.