A set of eight systolic blood pressures is given. 1 2 3 4 5 6 7 8 Pressure 111 122 135 151 128 117 103 121 (a) Find the median value for the dataset. 121.5 Correct: Your answer is correct. (b) Find the values of the lower and upper quartiles. Q1 = 111 Incorrect: Your answer is incorrect. Q3 = 135 Incorrect: Your answer is incorrect. (c) Find the value of the interquartile range (IQR). IQR = (d) Identify any outliers in the dataset. Use the criterion that a value is an outlier if it is either more than 1.5✕IQR above Q3 or more than 1.5✕IQR below Q1. (If there are no outliers, enter NONE in the answer box.)