Evalution of data presentations

Question 1

Advantages of Data tables?

2

Answer 1

• Gives all data equal visbility
• Can see exact values

Question 2

Advantage for bar charts

Answer 2

• Accurate representation of data as bars are proportional to values

Question 3

Advantage of line graphs

2

Answer 3

• Can see trends over time
• Can identify speed of change over time

2

Question 4

Advantages of scatter graphs

2

Answer 4

• Can identify relationships
• Can identify anomalies

Question 5

Advantages of pie charts

3

Answer 5

• Widely recognised technique is easy to understand
• IF has small number of segments - makes it easier to read
• Easy to compare

Question 6

Advantage of dot maps

Answer 6

• Shows distribution clearly

Question 7

Advantages of choropleth maps?

Answer 7

• Can identify spatial patterns
• Able to show all countries

Question 8

Advantage of proportional symbol maps

Answer 8

• Can identify spatial patterns

Question 9

Advantages of OS Maps

3

Answer 9

• IF scale is included - can determine spatial area of different features
• Contour lines/spot heights help to show the relief of the area
• IF a key present it helps the reader to understand the human and physical features shown on the map

Question 10

Advantages of maps using GIS

4

Answer 10

• Can use to measure distances
• Can add laers to give extra meaning/insight
• Can analyse relief/terrain in software
• Can export data to Google Earth, ect

Question 11

Advantages of satelite images

2

Answer 11

• Able to see spatial patterns of land use/vegetation cover/physical features
• Shows a visual image of the area rather than a diagram form that a map would show

Question 12

Advantages of photographs

2

Answer 12

• Visual record of that snapshot in time gives qualitative information
• Lots of inomation can be gathered from one photo

Question 13

Limitations of data tables

2

Answer 13

• Difficult to identify relationships/patterns
• Does not visualise data

Question 14

Limitations of bar charts

2

Answer 14

• Difficult to see spatial patterns
• Without data labels, does not show exact values

Question 15

Limitaton of line graphs

Answer 15

• Lines between data points suggest regular change between the points

Question 16

Limitations of scatter graphs

3

Answer 16

• A more complex technique which may not be recognised by all readers
• IF no line of best fit - may be difficult to confirm the direction of the relationship
• Does not show change over time (unless time is one of the variales)

Question 17

Limitations of pie charts

5

Answer 17

• May put ‘others’ into a category
• Without data labels, does not show exact values
• IF has large number of segments - makes it more difficult to read/interpret
• Unable to show change over time
• May not be able to show regional/spatial variations

Question 18

Limitations of dot maps