what is secondary data?
data collected by someone else
what are the most common mistakes with questionnaires?
- time frame
what is discrete data?
data where the units of measurements cannot be split up. You cannot get half of it
what is continuous data?
units of measurement can be a range of things
data handling cycle
1) specify the problem
2) collect data
3) processing and presenting the data
4) interpret the results
What is primary data?
data collected yourself
in tree diagrams:
And =
Or =
= x e.g. not stopping AND stopping
= + e.g. not stopping OR stopping