CH6: Data Collection - Signal Processing

Question 1

What is signal?

Answer 1

Real data regarding phenomenon of interest

Question 2

What is noise?

Answer 2

Unwanted information. Noise obscures or distorts the signal

Question 3

What does data smoothing do?

Answer 3

There are various procedures to remove noise, including data smoothing, that will then allow the real signal to be observed.

Question 4

Noise in data will create ___________. Error can be grouped into one of two categories - __________ and __________.

Answer 4

error, systematic, random

Question 5

What is random error?

Answer 5

Random error causes one measurement to differ slightly from the next. It comes from unpredictable changes during an experiment

Question 6

What is systematic error?

Answer 6

Systematic error means that your measurements of the same thing will vary in predictable ways