1

Alternative Solution• Definition of variables:

– Independent variable - advertising campaign.– Dependent variable - sales.

• Operationalization of variables:– Independent variable - showing alternatives of

the advertisement.– Dependent variable - number of sales by unit of

light chocolate milk.

2

• Measurement:– Show the advertisement(s)– Look directly at the sales numbers supplied by

Freia• Sample:

– Decide what your population is, then how to draw a representative sample.

– e.g. If population is all of Norway, then pick an “average” place to show the advertisement.

3

• Data collection:– Collect data directly from Freia– Make sure data is available for different regions

and possibly each store.

4

Experiment Alternatives:X = treatment O = measurement

Alt. 1: X O1

O2

Alt. 2: O1 X O2

Alt. 3: X1 O1

X2 O2

O3