Assignment and task: 2 Unit 3 d2
Teachers name: Charles Musana
Class: 1G
What validity is?
Validity refers to how well a test measures what it is purported to measure.
Internal Validity
This revolves around the issue of whether the questions asked can really explain
the subject of your research; this would estimate the validity of measures in
terms of research design and variables that can interfere with the process of
making realistic conclusion. E.g if you were to ask people about using an Apple
device at that moment, you will need to consider what percentage of battery
there is and the state of the phone.
External Validity
“This deals with the extent to which results can be generalized out to the type of
population that your research sample represents. Therefore, it centres on the
specifics that characterize your target audience. Market research uses small
samples from large population or market. Therefore, obtaining external valid
results is crucial for applying your findings on a category as a whole”
Reliability
When coca cola are doing the research they need to make sure the coca cola
uses consistent questions. Coca cola will need to make sure the they ask lots of
people to answer also the questions will to everyone because almost everyone in
the world has drank coke so they will be able to give answers easily. They will
also need to make sure that the forms and data are easy and not time
consuming because people will lose interest and walk off if it’s too time
consuming, this could be done by making sure there are always pens with them
because not everyone would have pens. They could also keep in mind that if
they do the surveys online not everyone might have access to the internet.
However this type of research might not be the best for coca cola because it
expensive and it will have to be done in so many parts of the world as coca cola
is an international business so I think it will be better if the buy secondary
research.
Test/retest, I will suggest that when they are collecting data for coca cola they
can survey two or three times a year and have the same survey asking group the
same group of people to complete it so this way they can add all the reviews
together and get an average out of all of it also by doing this it could have the
best possible data and that the research is going to be accurate. They can use
test/ retest technic to find out how many people will buy their drinks next year. If
they get a positive result it does not mean that they will have to stop there but
they will need to ask multiple groups of people or even get information from
competitors to get the most accurate results.
The reason why they should test/retest or survey’s is that customers usually ask
the same questions. So this can help them to find the most reliable data. Also
some customers may not be in the mood or maybe in a rush when they are
asking them to complete the surveys so therefore they may just tick yes or no for