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mofa留学圈
The graph shows data for 40 children, half of whom were male (M) and half of whom were female (F), in each of three age groups: at least 9 but less than 10 years old, at least 11 but less than 12 years old, and at least 13 but less than 14 years old. These children were taught to perform chest compressions used in cardiopulmonary resuscitation (CPR). For CPR, ideal compression depth is 40 to 50 millimeters (mm). The children used a practice mannequin with sensors that recorded the average (arithmetic mean) depth achieved by each child. The results are plotted on the graph.Based on the information provided, select from each drop-down menu the option that completes the statement most accurately.In the study, age and average compression depth are positively correlated for .Among the three age groups displayed, the median average compression depth is in the ideal range for CPR for the group of children who are at least years old.
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