Existing Treatment (ordered values): 4.83, 5.23, 5.46, 6.02, 6.34, 6.71, 7.20, 7.93 New Treatment (ordered values): 4.27, 4.82, 5.05, 5.40, 5.64, 6.12, 6.62, 7.36 Combined Sample of n = 16 (ordered values) 4.27, 4.82, 4.83, 5.05, 5.23, 5.40, 5.46, 5.64, 6.02, 6.12, 6.34, 6.62, 6.71, 7.20, 7.36, 7.93 Summary/Descriptive Statistics for Combined Sample of n = 16 xbar = (1/n) (sum of x_i) = 95.0/16 = 5.9375 s^2 = 1/(n-1) (sum of (x_i - xbar )^2 ) = 16.0017/15 = 1.06678 s = sqrt{s^2} = sqrt{1.06678} = 1.03285 median = (1/2)[5.64 + 6.02] = 5.83 Q_1 = (1/2)[5.05 + 5.23] = 5.14 ; Q_3 = (1/2)[6.62 + 6.71] = 6.665 4.27 5.83 7.93 _________ | | | | | | Boxplot ------| | |--------- |____|____| -+------+------+------+------+- 4 5 6 7 8