Answer:
a) only extreme values are used in its calculation.
Step-by-step explanation:
In a data set, the range is given by the subtraction of it's highest value by it's lowest value.
The disadvantage is that it gives a high weight to extreme values, not focusing on central values. So the correct answer is given by option a
It is 18 because it is a square so all the sides have to be the same so that would make it 18
7 x 300 = 2,100 hope i helped and there are 21 hundreds in 2,100