Find the interquartile range of the following data set {2, 4, 5, 6, 6, 8, 9, 10, 11, 11, 13, 15, 17, 18, 18, 20, 21, 22 0 |QR = 6 IQR = 11 IQR = 12 0 IQR = 18​

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

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