inter77An Example of Calculating IQR Using an IQR Formula. To identify the interquartile range of a set of data, simply subtract the first quartile from the third quartile as follows:12K Followers, 4 Following, 68 Posts - INTER77 OFFICIAL (@inter77official) on : Daftar akun VIP Transaksi Cepat & Aman Bonus Deposit Harian Join Click