Answer:
Part A) Option c) 15.27 mm
Part B) Option b) 12.05 mm
Explanation:
The mean is also sometimes called the average
To find the mean, you add up every number in the data set, and you divide that sum by the total number of data points within the set.
A) What is the mean rainfall for the highland storms?
The sum of the data of Highlands storms
= 2*2 + 3*4 + 2*6 + 3*8 + 4*10 + 3*12 + 4*14 + 5*16 + 5*18 + 4*20 + 2*22 + 24 + 2*26 + 2*28 + 30 + 32 = 672
the total number of data = 44
Mean = 672/44 = 15.27 mm
So, the answer is option c) 15.27 mm
B) What is the mean rainfall for the lowland storms?
The sum of the data of Lowland storms
= 3*2 + 5*4 + 3*6 + 3*8 + 5*10 + 7*12 + 6*14 + 4*16 +2*18 + 20 + 2*22 + 24 + 2*28 = 530
the total number of data = 44
Mean = 530/44 = 12.05 mm
So, the answer is option b) 12.05 mm