I'm pretty sure this is correct
Answer:
The first quartile is 5
The third is 8
The interquartile is the difference between the first and third quartile.
The interquartile is 3
Step-by-step explanation:
First, make a list of all the numbers. To find the first quartile, you have to first find the median. The median is the first 7 in the list.
Everything before 7 is the lower percentile of the range.
The firsr quartile is the median of the lower percentile.
The lower list is:
2,3,4,4,5,6,6,6
The median of this list is 5.
The process for finding the third quartile is the same except the list is the higher percentile which is the list of numbers above the median.
Equation: 120 ≥ 10n + 20
Subtract 20 from both sides,
100 ≥ 10n
Divide both sides by 10,
10 ≥ n
It means, it is equal or Smaller than 10.
So, the answers would be: 7, 8, 9, 10
Hope this helps!