Unfamiliar Fieldwork

Question 1

Why do you calculate an average

Answer 1

• remove anomalies
• see general trends
• compare changes

Question 2

Chloropleth Map

Answer 2

+ Easy to spot trends
_ Not useful for showing total values

Question 3

Isoline Map

Answer 3

+ Can easily compare areas of equal value
_ difficult to read lines if they are close together

Question 4

Proportional Symbols

Answer 4

+ Easy to interpret general trends
_ Clustering can make them hard to read

Question 5

Bar Charts/Histograms

Answer 5

+ Clear comparison and trends
_ Doesn’t show the causes of the trends

Question 6

Line Graph

Answer 6

+ Shows multiple sets of data
_ Too much data plotted makes it hard to read

Question 7

Dispersion Graphs

Answer 7

+ Can easily spot anomalies in data
_ Can be time consuming to analyse

Question 8

Flow Line

Answer 8

+ Shows connection between places
_ Overlapping makes it hard to read

Question 9

Scatter Graphs

Answer 9

+ Line of best fit shows correlatio
_ ANalysis of the correlation can be subjective

Question 10

Pictogram

Answer 10

+ easy to interpret
- Not suitable for continuos data

Question 11

Pie Chart

Answer 11

+ Displays parts of a whole
- Cannot be used to show trends

Question 12

Divided Bar Chart

Answer 12

+ Easy to see trends in large sets of data
_ Requires additional explanation

Question 13

Random Sampling

Answer 13

Randomly choosing sites to collect data

Question 14

Random sampling advantages

Answer 14

• Not Bias
• Can be done in a large area

Question 15

Random Sampling disadvantages

Answer 15

• Sites can be clustered - data is not representive
• Can lead to unaccesible sites

Question 16

Systematic Sampling

Answer 16

Picking sites every _____ metres

Question 17

Systematic sampling advantages

Answer 17

• Good representation of an area
• Easier than random sampling

Question 18

Systematic sampling disadvantages

Answer 18

• time consuming
• can lead to inaccessible sites

Question 19

Stratified Sampling

Answer 19

Picking sites by topic

Question 20

Stratefied Sampling advantages

Answer 20

• Flexible - fits with lots of different enquiries
• good comparison of different areas

Question 21

Stratefied smapling disadvantages

Answer 21

• not suitable for questionares
• bias from person picking sites

Question 22

How do you improve accuracy and reliabiltiy of data?

Answer 22

• more repeats
• calculate average
• remove anomolies
• wider range of data
• collect data at different times of year
• opinion based - ask for different views

Question 23

How do you make data representative?

Answer 23

• collect at more sites to cover a larger area
• Ask lots of different people for a questionare - age/gender/religion
• collect data at different times of year2