Data Collection and Analysis
After this lesson you should be able to.....
Identify how bias, the use of language, cost, ethics, cultural
sensitivity and timing affect the collection of data.
Look at survey questions and identify whether it is a good
question or whether it has problems.
Create your own survey questions to ask the class.
What is the purpose of survey questions?
They are used to collect opinions and
information from people.
Do you like Dentine gum or the super fruity Trident
Bias Are you influencing the outcome through the
wording of your survey questions.
If so, the results of your survey will not be a valid
representation of the population sample.
Do you eat foods with lots of monosaccharides?
Use of Language
Make sure to present the questions in a way that
the people answering them will understand.
You are doing a survey and want to collect
data from 100 people all over Winnipeg.
You decide to take a bus to each person's
Is it a good idea to take the bus, or is there
a better way to conduct the survey?
Does the cost of a study outweigh the benefits?
When will it be beneficial to spend large amounts on
surveys and data collection?
Who might spend large amounts of money on