My understanding of...
Mean: Is were you have to add up all your numbers and you divide the final number with a number that is divisible by the group of data.
Median: Median is the number that is in the middle of the line or group, sometimes you might need to divide some numbers.
Mode: My understanding of mode is that mode is the number that you see the most, in the group of numbers.
Range: Is where you have to subtract the lowest and highest number to get your range.