What is the interquartile range of 77 88 92 81 86 84 86 83 and how do you get it thx plz

To find the IQR you first need to write it in numerical order

77, 81, 83, 84, 86, 86, 88, 92

IQR is just Q3 - Q1

Q1 is the middle of the first have, since it has an even set of 4 numbers in the first half you need to take the average of the two middle ones.. which is 82

Q3 done the same process would be 87. 

87 - 82 = 5

IQR = 5

Ais correct yes but if u want explanation i have it for you if u have to show work