Data Analysis - Best Fit Line

*Please click the above picture for a clearer view

Through the best fit line in this scatter plot, we can see that there is a positive relationship between the length of the forearm and the length of the feet.


As you can see, there is one point that is much deviated from the rest of the points.
This is because when we take a look at our raw data, we found out that the difference of length between their hand and feet usually range between 0 - 2.35 cm. However, there was this particular participant whose difference between he's forearm and feet was not within that range, instead it was 4.1 cm.
Therefore, he could be the reason why that one point is really deviated from the rest.

So as a group, we thought about it to see if we could have cause that wrong reading.
But we realized soon after that we made no mistake during the data collection.
Because all of us made sure that the people measuring the participants, followed what we had plan during our planning for data collection. All of us witness that they measured the reading twice consistently with the same measuring instrument and at the standardization landmarks. Hence we decided to see our lecturer to ask if this plot if ok.
To our relieved, she said it was ok and told us maybe the data is just like that.