Open Access Surveying Library - Solution: Errors Identification

Select the appropriate error Source (S)

and Type (T)

for the situations described below. Depending on the error and its behavior it may be borderline between two different Sources or Types.

S	T	Situation
I	S	The spedometer in your car displays a speed that is 5 kph too high.
I	R	To win a $200 shopping spree, a local strore required guessing the number of jelly beans in a clear sealed glass jar. Out of the 75 guesses made, only two were correct.
P	R	You're holding a plumb bob and trying to keep it centered over a 1/2-inch iron rod marking a property corner.
I	R	Your chances of hitting the jackpot on a slot machine (assume it's not rigged so the house wins).
I	S	The tape you used to measure setbacks from your property lines is missing the first foot.
P	S	A car blocks your line of sight through an instrument. But you can see your target through the car's widshield so you go ahead and take your reading.
N	R	You're surveying with a GPS unit mounted atop a 2 meter pole. There are variable gusts up to 30 mph with nothing to block the wind.
P	S	You are pacing a distance up and down a very steep hill. You notice your pace count is greater going downhill than upill.