The mean is the average, in which you divide the sum of all the numbers by how many numbers there are.
42 + 53 + 18 + 11 + 81 + 50 + 21 + 97 + 41.
83, 136, 154, 165, 246, 296, 317, 414.
A sum of 414 and a total of 9 numbers.
414/9 = 46.
Average : 46.
The mode is the number that appears the most.
Mode: No mode.
The median is the middle number among a list of numbers from least to greatest.
I will organize a list for you:
11, 18, 21, 41, 42, 50, 53, 81, 97.
To determine the median quickly, cross out the smallest number and the largest number until you can no longer do so.
11 and 97, 18 and 81, 21 and 53, 41 and 50.
Median: 42
The range is the difference of the biggest and smallest number. In other words, subtract the smallest number listed from the largest number listed.
97-11 = 86.
Range: 86.
Hope this helps!