**EDIT:** Complete rewrite.

Select the two columns of data, with the first column being the X axis. Then insert a scatter chart.

(And here I thought the line graph was the easy one.)

If you want to display the numbers as kilo-ohms, I suggest you divide the numbers in the column by 1000 and use the custom number format: `0" kΩ"`

Even better, don't divide the original data. use a custom number format of `0," kΩ"`

where the comma after the zero removes three zeros to show thousands. In the same way `0,," MΩ"`

has two commas, so three sets of three zeros are removed, showing millions.