Identify and investigate issues involving numerical data collected from primary and secondary sources (VCMSP268)

LO: To identify and investigate issues involving numerical data collected from primary and secondary sources.

Know:

  • What is primary and secondary data.

Understand:

  • That data can be used to paint the story of the bigger picture and sometimes does contain bias.

Do:

  • I can interpret and investigate primary and secondary data.

Advantages of Primary Data

  • Surveys are generally easy to do. All you need to do is ask.

  • Usually based on unbiased information (if asking the questions correctly).

  • Data is directly straight from the source.

Disadvantages of Primary Data

  • Could be time consuming because running around and asking questions/surveying everyone takes a lot of time and energy.

  • The data collected still needs to be interpreted.

  • Methodology could be flawed. Eg.) sampling could lead to different than “real world” results.

Advantages of Secondary Data

  • Quickly find data that you don’t have to survey yourself. You can grab data from someone else who has done the hard work of collecting data.

  • Saves money so you don’t have to spend money, time energy and effort to collect data again when it’s already been collected.

  • Spend more time analysing the data than collecting it.

  • Can look at data over a long period of time.

  • Can get data from specialized personnel. (People who are paid to collect data)

Disadvantages of Secondary Data

  • Data might not be reliable, since you didn’t do the survey yourself.

  • No control over who was surveyed.

  • Serious-ness of the data is lost.

  • Need to analyse the data yourself.

  • Data collected could also be flawed. eg.) a survey asked what colours do you not like vs. what is your favourite colour?

Next Lesson