Hi,

 

I need help on this graph question.

Plot the %CV against the determinations of your pipetting and that of your partner, when using an automatic pipette compared with a glass pipette for flask 1.

 

I have calculated the %CV values for my data and partners data for both pipettes. But I dont understand what kind of graph will be used here, and what would I plot against them ? do they mean absorbance values against the CV values ?

 

please help. very worried

I would think so. As I read the instructions the determinations would be the results set which I take to be the absorbance values. these would be put on a scatter plot against the confidence intervals.

You mean using scatter graph and plotting absorbance values against the cv% values ? but the absorbance values are many and the CV% values only less.

 

for example

 

automatic pipette

about 6-7 absorbance readings and only 1 CV% value so how would i plot that ? so confused any ideas?

You mean using scatter graph and plotting absorbance values against the cv% values ? but the absorbance values are many and the CV% values only less.

 

for example

 

automatic pipette

about 6-7 absorbance readings and only 1 CV% value so how would i plot that ? so confused any ideas?

 

Ah, now I understand. Each of the two data series, one for the automatic pipette and one for the glass pipette could be plotted by run or other suitable descriptor based on the data point, each data point with the confidence interval indicating the uncertainty in that data measurement.

 

Something similar to this:

Similar to this.