Answer: e. equals 45
Explanation:
Quartile is a statistical measurement that divides statistical data into four quarters. While percentile divides data in form of percentage (100%).
The relationship between the two is that first quartile is 25th percentile, second quartile is 50th percentile and third quartile is 75th percentile.
Therefore, the percentage of all observations in a data set that lies between the 30th percentile and the third quartile is
3rd Quartile = 75th percentile
And 30th percentile
difference = (75 - 30) = 45 %
Therefore, 45% of all observations in a data set lies between the 30th percentile and the third quartile