Refer to Data Table B, in which you entered rate constants. In the spaces below,

Question

Refer to Data Table B, in which you entered rate constants. In the spaces below, enter your rate constants, in M-1s-1. Do not include units.

What is the range of these values from highest to lowest?
  
2.4e-3
What is the average of these values?
6.34e-3

The remainder of this question is designed to help you decide if the data from one of your experiments can be discarded.

To quantitatively "throw out" a measurement, you must perform a statistical test on your data called a Q-Test. The formula for the Q-test is

Qcalculated = gap/range

where gap = (questionable value next closest number) and range = (largest number smallest number).

Qcalculated is then compared to Qtable. If Qcalculated > Qtable then the questionable datum can be discarded.

Explanation / Answer

1) range=largest number smallest number=0.0076-0.0052=0.0024=2.4*10^-3

2)Average=0.0064+0.0061+0.0076+0.0052+0.0064/5=0.0063=6.3*10^-3

3)gap=questionable value next closest value=0.0076-0.0064=0.0012

this value is the farthest from the mean by 0.0013 ,so questionable.

Qcalculated = gap/range=0.0012/0.0024=0.5

Qtable (5 measurements)=0.64

Qcalculated<Qtable

this data cannot be discarded.

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