FUNDAMENTAL SURVEYING Mathematics and Statistics

Question 1

What is the sum of interior angles of a closed traverse with 5 sides?

Accepted Answer

540°

Answer

360°

Answer

720°

Answer

900°

Question 2

A slope distance of 500 ft is measured at a vertical angle of 10°. What is the horizontal distance?

Accepted Answer

492.4 ft

Answer

500.0 ft

Answer

507.6 ft

Answer

485.2 ft

Question 3

What is the standard deviation of a series of measurements: 10.1, 9.9, 10.0, 10.2, 9.8?

Accepted Answer

0.158

Answer

0.141

Answer

0.200

Answer

0.100

Question 4

In surveying, the propagation of random errors follows which law?

Accepted Answer

Law of error propagation

Answer

Law of sines

Answer

Law of cosines

Answer

Gaussian elimination

Question 5

What does a 90% confidence interval mean in surveying measurements?

Accepted Answer

There is a 90% probability the true value lies within the interval

Answer

90% of observations fall within the interval

Answer

Only 10% of measurements are incorrect

Answer

The measurement error is less than 10%

Question 6

A line has a bearing of N 45° E. What is its azimuth from north?

Accepted Answer

45°

Answer

135°

Answer

315°

Answer

225°