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Sara was speaking with mobile phone, while she was walking in a park. There were attractive places such as entertainment zones, a lake, a restaurant and sitting places in the park that you can see in the attached image. She walks 15 meters towards East. Then she turns and starts walking to North-East for 25 meters. Then she walks to south-east for another 12 meters. Then to north 5 meters. He then turns to her left(west) where she walks for 45 meters.
- Based on her walking directions, which destination Sara finally reached to?
- How probable is that such or larger shift of her walking is a result of random walk?
- Can we deduce at p<0.05 level that Sara¤s movement was purposeful?
Using the online calculator
• Select Cases have weights
, Set declination to zero
• Find the directions in degrees and input the given degrees in the first column and distances to the second.
• For storing the results use Save or Copy
• Find Statistics of weighted directions
from the results.
• The total shift is expressed as Total move distance
. The mean and total directions are identical.
The excercise is compiled by Najmeh Mozaffaree Pour.