What is the interquartile range of the data set 115, 98, 118, 102, 96, 90, 125, 94, 85, 100, 104

Hello,

interquartile range would be 21

21

Step-by-step explanation:

1. Re-order numbers from low to high

85, 90, 94, 96, 98, 100, 102, 104, 115, 118, 125

2. Find Q1 and Q3: they are the middle number of top and bottom half of the data

Q1 is 94, Q3 is 115

3. Find IQR

IQR = Q3 - Q1 = 115 - 94 = 21

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.