Example continued: the impact of variability on a difference in means.
{"Image DocumentName": "Example continued: the impact of variability on a difference in means.", "Image ImageDescription": "The three graphs each show two groups with the same mean difference. However the groups in each of the three graphs have different levels of variability. Where there is lower variability there is less cross-over between the groups, and so the difference of the means expresses a more \u2018real\u2019 difference (there is almost no one in group A with the same score as anyone in group B).", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}