First double click the X and Y data series, then a spreadsheet for those data will
be displayed.  Click the "Edit +/-" buttom and then edit the 5th observation to "na",
after that use the "Estimate Equation" in the "Quick" option to run the regression
again.

And here are the results:

And then click the "View" buttom, then choose "Residual Tests" and
"White-Heterokedasticity (no cross-term)", and the results like this.

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