Relationship between different lengths

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Research question Is there a correlation between the leg length, height and stride length? Apparatus 1. Measuring tape 2. Paper 3. Pen 4. Calculator Procedure 1. Using the measuring tape; measure the leg length by putting the starting end of the tape on the malleolus, and the ending point on the iliac crest. Make sure the person you are doing the measurements on does not feel uncomfortable. 2. Record the length of the leg and height in two different columns. 3. Ask the person to walk five metres and count the amount of steps he/she takes. 4. Write down the amount of steps the person took. 5. Divide five metres with the amount of steps taken in order to find the walking stride length. 6. Plot two different graphs on Excel; one that compares the leg length to height, and another one that compares stride length and leg length. Make sure to refer to the r^2 value when stating whether a correlation exists. Conclusion From Graph α, which compares the leg length to height, it can be seen that there is a strong positive relationship. As the individual's leg length increases, so does the height. The R^2 value is circa 0,92 which is close to 1, and ergo, the data is more accurate in predicting a relationship between the two sets of data. This means that as the leg length of an individual increases, so does the height. This relationship could be explained by the structure of the human body, as the length of the leg increases, the rest of the body would also need to be longer in order to maintain a symmetry and normal proportions of the body. Therefore, the height of a person would be reciprocal to the length of the leg of an individual. Graph β, which compares stride length and leg length, it can be seen that the values do follow the... ... middle of paper ... ... end result of stride length that one would calculate at the end of the experiment. To improve this, one could possibly paint the bottom of the individual's feet. This would allow oneself to actually have a very reliable record of the stride length, and not solely based on counting strides. This would allow us to measure the stride length and not purely divide a certain distance (in this experiment 5 meters) by the number of strides that a person counted to have taken. Furthermore, one could also compare the effect that the three different age groups have on the average human's stride length. One could conduct the experiment on humans with the three different age groups, teenagers, middle aged individuals and an elderly group of individuals. One could see the impact that age might have on the data that one would collect regarding their stride length and leg length.