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"Be sure that the values are missing at random and that you are not inadvertently removing a class of participants" measuringu.com/blog/handle-missing-data.php?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%253A+MeasuringUsability+%2528Measuring+Usability%253A+Quantitative+Usability+and+Statistics%2529
Mood 0