Does Our Height Affect Our Cubit?

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Does our height affect our cubit? Hypothesis: I think the graph will show positive correlation and that the taller we are the larger our cubit. I think this because our hands as humans generally lie when by our sides just below the hips. This means the taller we are the longer our cubit has to be in order to keep our body in proportion because, when we are taller our hips will be higher and our cubit therefore needs to be longer to enable our hands to lie beneath the hips. It would not look proportional on a human if they were really tall with really short/long arms. Also in order for the hands, arms and fingers to be functional they need to have length in order for movement and flexibility. If our cubit was really short our arms would be around our waist and therefore not long enough or free enough to move away from our body. So I think their will be in a general trend of positive correlation in this data. The taller they are the longer their cubit. I first did a graph based on the data from the 20 male and females who were 14-16. I decided to produce a single graph on this because the people involved are growing teenagers and I wanted to see if this had any affect on the two variables. By looking at this graph we see a good positive correlation the further the mark is up on the height axis, generally the further along the cubit axis it is. This therefore supports my hypothesis, as I predicted that the taller the person is, the larger their cubit. There is only one anomaly in this data, but it still isn’t outstandingly out of trend. This is the anomaly I have picked up on. It appears to be out of trend, having a height of 158cm but a small cubit of only 25. The possible reasons for this could be: • This person has a larger upper arm to make up for the shortness of his forearm. • They have not finished growing yet so his body seems a little out

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