GRE
The median of the ten measurements in sets X and Y combined
70
$$\sqrt{x}$$+$$\sqrt{1-x}$$
1
$$\frac{ST}{RT}$$
$$\frac{ST}{RS}$$
The length of line segment AB
$$\sqrt{5}$$
The standard deviation of the n numbers $$x_{1}, x_{2},...x_{n}$$
The standard deviation of the n numbers $$x_{1}+c, x_{2}+c,...x_{n}+c$$
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