In the Bethlehem study, found in the lecture, the author used Euclidean Distance for the measurement...

In the Bethlehem study, found in the lecture, the author used Euclidean Distance for the measurement between sniper and youth.

Expert Solution

What is Euclidean distance?

In simple terms it is another name for Pythagoras theorem in mathematics.
It is the square root of the sum of squared differences between corresponding values of the two vectors and mathematically can be represented as—

Note- it is used for data/variables measured on the same scale. Here, in the question, two variables- age of sniper and youth is measured on the same scale of age i.e. years.

Why is it used in measurement between sniper and youth?

Euclidian distance is used in studies to compare sets of Euclidean vectors/variables in order to find out similarity and dissimilarity.
Co-relation co-efficient i.e. parameter of closeness is inversely related to Euclidean distance. More is the distance, less is the similarity. This shows how strongly the pairs of variables are connected.

This statistical technique is used to compare data obtained from respondents (youth) across variables (whether they are a sniper or not). A particular trend is obtained which helps to conclude the inferences from the study.

In the given case study Co-relation co-efficient obtained helps to tell about how the age of youth and sniper is related across the data collected. It helps to find out a correlation between these two variables and ascertain a trend in the data collected.

references--

http://www.analytictech.com/mb876/handouts/distance_and_correlation.htm

Hayet Jeridi answered 2 weeks ago

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