Top panel: Example of probable misdetected QPOs in the first set of simulated light curves by the CAR process. Solid dark green circles plus error bars show the simulated light curve, solid lines in red show the best-fitting result by Equation (1), with χ²/d.o.f. = 6. The solid lines in purple show the sinusoidal component with a period of 910 days. Bottom panel: One of the probable misdetected QPOs in the second set of simulated light curves. Solid dark green circles plus error bars show the simulated light curve, and the solid line in red shows the best-fitting result by Equation (5), with χ²/d.o.f. = 1.13. The solid and dashed lines in purple show the sinusoidal components with periodicity of 263 days and 851 days, respectively.