After arranging the data from least to greatest:
Q1: 12.5
Q3: 16
IQR ( Q3-Q1) : 3.5
Answer:
24
Step-by-step explanation:
Let 'x' be the number
x +25% of x = 30
x + 0.25x = 30
1.25x = 30
x = 30/1.25
x = 24
Answer:
4
Step-by-step explanation:
Since the first quartile is at 25%, 25% of 20 is 5. The median is the 50% mark of the set, and 50% of 20 is 10. So, there are 4 numbers between the 5th data point and the 10th, which are the 6th,7th,8th, and 9th data points.