To find the mean, we need to calculate the sum of the products of each value and its frequency, and then divide by the total frequency:
Mean = (14*7 + 15*9 + 16*12 + 17*18 + 18*20 + 19*17 + 20*4) / (7 + 9 + 12 + 18 + 20 + 17 + 4)
Mean = 989 / 87
Mean ≈ 11.35
Therefore, the correct choice is:
The mean is approximately 11.35 years.
Find the mean, median, and mode of the set of values Age (years)14 15 161718 20 19 Frequency7 912 17104 Find the mean Select the correct choice below and, necessary, in the answer box to complete your choice The mean is approximately years Round to two decimal places as needed)
1 answer