Stats & Graphs

Calculate an unknown concentration (Cu) using As = 0.2, Cs = 25, and Au = 0.15

• 0.75

• 0.0012

• 18.75

• 33.33

Calculate an unknown concentration (Cu) using As = 0.6, Cs = 4, and Au = 0.7

• 4.67

• 1.68

• 3.42

• 0.105

Calculate the absorbance if the transmittance is 20%

• 1.70

• 3.3

• 1.30

• 0.70

Match the following regarding Levey-Jennings interpretation:

• result past the -2s and +2s range

• SHIFT

• 6 tests in a row going in one direction

• TREND

• 6 tests in a row above or below the mean

• OUTLIER

Is this graph in control or out of control?

• in control

• out of control

Is this graph in control or out of control?

• in control

• out of control

Is this graph in control or out of control?

• in control

• out of control

Does the following graph accurately present its data?

• Yes

• No

Does the following graph accurately present its data?

• Yes

• No

Using the following graph, determine what the approximate concentration of an unknown is with an absorbance of 0.25

• 4

• 7.5

• 11.5

• 9