Factors considered when selecting an appropiate presentation technique Flashcards
what is the aim of presenting data?
shows raw data collected in a visual form and allows patterns/trends to be seen
what factors control the techniques to display data?
- nature of data
- purpose of analysis
- nature of the location you choose
quantitative data definition
statistical data which consists of numbers. it is objective and should be value free
qualitative data definition
data is subjective description in words which varies depending on who is recording it
Problems with the use of qualitative data
- subjective
- values can be unclear e.g. what does heavily mean
- what does the scale mean and is it appropriate?
discrete data definition
data with distinctive separate parts e.g. crop yeild
ordinal data definition
data that has an order e.g. ranked data
continuous data
data where there are no breaks but something happens continuously e.g. temperature
areal data
data that applies to an area rather than a point/individual e.g. population per km
time-series data
data where something occurs at intervals e.g. rainfall
period data
data where a phenomenon repeats itself at intervals e.g. census returns
Interval of data should be considered because
-scale shouldn’t be too big/small as if the scales aren’t appropriate it will hide patterns and make data more difficult to analyse
Location should be considered
comparative diagrams must be the same scale (adjacent) because it must best represent that area/feature it applies to.
size of symbol should be considered
if too large may hide information underneath or if too small may be judge inaccurately which could give an unreliable conclusion
shading should be considered
avoid mixing lines/white means no data and shading gets darker as value increases; don’t want to get confused and compare inaccurately
