Fieldwork

Question 1

Primary Data

Answer 1

information that is collected first-hand, eg tallies, measurements and photographs

Question 2

Secondary Data

Answer 2

information that someone else has previously collected and made available, eg on the internet

Question 3

Random Sampling

Answer 3

Selecting a person to interview or site to measure, at random.
Lack of bias
Time consuming

Question 4

Systematic Sampling

Answer 4

collecting data in an ordered or regular way, eg every 5 metres or every fifth person.
Represents population

Question 5

Stratified Sampling

Answer 5

dividing sampling into groups, eg three sites from each section of coastline, or five people from each age range
Represents wide range of population
Time consuming, data can be biased

Question 6

Quantitative

Answer 6

Results that can be expressed using numerical values.

Question 7

Accuracy

Answer 7

How close a measurement is to its true value

Question 8

Validity

Answer 8

Suitability of the method to answer the hypothesis it was intended to answer

Question 9

Reliability

Answer 9

The extent to which consistent results would be achieved if the methods were repeated