Multiple sclerosis (MS) is an autoimmune disease that affects the brain and spinal cord.
MS affects women more than men, and is most commonly diagnosed between the ages of 20 and 40. MS sufferers typically have problems of coordination and walking. The standard care for some sufferers is a plastic device affixed to the lower leg and ankle. In a recent test of this device, volunteers with MS were randomly assigned to two experimental groups. The volunteers in one group used the plastic device; the volunteers in the other group did not use the plastic device. Each individual was timed as he or she climbed a set of stairs. Times, measured without the device (ND) and with the device (D), are presented below.

-Does it appear from your graphs above that the device helps the MS sufferers in thestair-climbing test?
Explain your reasoning in a few sentences.

Question

Multiple sclerosis (MS) is an autoimmune disease that affects the brain and spinal cord.
MS affects women more than men, and is most commonly diagnosed between the ages of 20 and 40. MS sufferers typically have problems of coordination and walking. The standard care for some sufferers is a plastic device affixed to the lower leg and ankle. In a recent test of this device, volunteers with MS were randomly assigned to two experimental groups. The volunteers in one group used the plastic device; the volunteers in the other group did not use the plastic device. Each individual was timed as he or she climbed a set of stairs. Times, measured without the device (ND) and with the device (D), are presented below.

-Does it appear from your graphs above that the device helps the MS sufferers in thestair-climbing test?
 Explain your reasoning in a few sentences.

Quizplus · Accepted Answer

The Answer is From the graph, it appears that the device does help MS sufferers in the stair-climbing test. The average time taken to climb the stairs without the device (ND) is noticeably higher than the average time taken with the device (D). This suggests that the device improves the ability of MS sufferers to climb stairs, as it likely provides better coordination and stability. Additionally, the range of times for the group using the device is narrower, indicating more consistent performance, while the range for the group not using the device is wider, suggesting more variability in performance. Overall, the data supports the conclusion that the plastic device is beneficial for MS sufferers in the stair-climbing test.

Multiple Sclerosis (MS) Is an Autoimmune Disease That Affects the Brain