We have to calculate the mean and median of the vowels in English alphabet.
The vowels are a,e,i,o,u.
According to the english alphabets,
a=1 , e=5, i=9, o=15 and u=21
So the data is:
1,5,9,15,21.
Mean = sum of all observations divided by the total number of observations
Mean =
![((1+5+9+15+21))/(5)](https://img.qammunity.org/2019/formulas/mathematics/high-school/go539b5v3hmzvivngce0clljxs8lmiq20b.png)
Mean =
![((51))/(5)](https://img.qammunity.org/2019/formulas/mathematics/high-school/xb923jms4pllx1seffhf7ehigij5kygaia.png)
So, mean = 10.2
Now we will calculate median for the data
1, 5, 9, 15 , 21
Since total number of terms = 5(Odd)
Median =
observation
Median =
observation
Median = 3rd observation.
So, median is 9.