The constant
sum scale produces what is assumed to be a ratio measurement scale.
Ratio data is the most powerful of all measurement scales because
it is characterized by an absolute zero point and an allocation
of points, each having equal value. Ratio scales measure the magnitude
of a characteristic and scale the differences between alternatives.
Constant sum data
is obtained by asking the respondent to "Assign 100 points across
the answer options so as to reflect your degree of preference, importance,
or other evaluation"
Typical questions might include identifying not only liking or preference,
but attribute strength, or intention to buy, look for a new job and so
forth.
Randomize:
We know that in elections, being the first on the list increases
chances of election. Similar bias occurs in all questionnaires when
the same answer appears at the top of the list for each respondent.
Randomization corrects this bias by presenting a random choice order
for each respondent.
To view a question type, choose from the drop down list.
Example Question Preview
What percentage of your major credit card purchases do you put on each of these major cards? *
