Answer:
median rainfall for highland storms = 18mm
median rainfall for lowland storms = 18mm
or
median rainfall for lowland storms = 17mm if the list of numbers is
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
Step-by-step explanation:
The median is the middle number of a sequence of ordered numbers.
The formula for the median is:
median = (n + 1 )/ 2
where n = total number of values
Note: the number that you find with this formula is the position. SO you have to go to the sequence of numbers and find the number that lies in that position.
Highland storms:
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
The numbers are already in ascending order so we can proceed.
n = 15
∴ median = (15+1)/2
= 16/2
= 8
The median is the umber in the 8th position
so, the median rainfall for highland storms is 18mm
Lowland storms:
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
The numbers are already in ascending order so we can proceed.
n = 15
∴ median = (15+1)/2
= 16/2
= 8
The median is the number in the 8th position.
∴ median rainfall for lowland storms is = 18mm
<u>Unclear: if this is the list of numbers: </u>
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
then the median would be:
n = 16
median = (16+1)/2
= 17/2
= 8.5
This means the median lies between the numbers in the 8th and 9th position.
∴ The median is = (16 + 18)/2
= 34/2
= 17
(aka. Option A)