The tool |
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The aim of surveylength is to provide an
estimation of the median length of an online questionnaire. |
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Lower and Upper estimates |
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As
it is very unlikely to get an estimate precise to the second, the lower
and upper estimates around the estimated length indicate that in all
probability, the length of your survey should range between these two
estimates. |
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Section «YOUR RESPONDENTS» |
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In this section you have to describe the
structure, age and language of the respondents who will answer the
survey. |
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Age of the respondents |
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By
default, the percentage of respondents in each age category is fixed to
12.5%. You can modify this repartition according to the age structure
of the respondents you need for your study. |
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Number of respondents |
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The
number of respondents who are going to take part in your survey has an
influence not on the average estimated length of your survey, but on
the lower and upper estimates of this duration. The more respondents,
the smaller the time interval around the estimated length |
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Section «YOUR QUESTIONNAIRE» |
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Percent of respondents by path |
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Many
surveys contain « filter questions », which means than some
respondents will have to answer more or less questions than others to
reach the end of the survey. For example, only respondents who gave a
low answer to a satisfaction question may be asked to explain why they
are unsatisfied. In order to deal why such « filter
questions », you have the possibility to indicate up to 3
different paths that respondents may have to follow. A path corresponds
to a defined number of questions respondents will have to answer.
For
example, within the same survey, 70% of your respondents may have to
answer on average 10 single closed-ended questions and 1 open-ended
question (= path 1), and 30% may have to answer on average 20 single
closed-ended questions and 3 open-ended questions (= path 2). You can
therefore indicate that 70% of your respondents will have to go through
path 1, and 30% will have to go through path 2. |
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Type of questions |
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Here
you have to indicate for each question type how many questions of that
type are to be found in each path of your questionnaire. |
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Single
closed-ended questions |
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Single
closed-ended questions are all types of questions where respondents
have to choose one or several answers in a predefined set of answers. |
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Examples of single closed-ended questions: |
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On a scale
from 1 to 9, how satisfied are you with your purchase? |
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Matrix
table questions |
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Matrix table questions are used when
respondents have to answer several questions using the same answer
scale. |
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Examples
of matrix table questions: |
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How
satisfied were you with the following aspects of the service? (scale
from 1 "not at all satisfied" to 5 "completely satisfied") |
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- Speed of
resolution |
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- Knowledge of
representative |
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- Solution
offered |
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- Friendliness
of representative |
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For
this question type, you have to indicate the total number of
items/question that respondents have to answer within all matrix
tables. In this example, the number of items/questions respondents have
to answer is 4. |
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Questions
with multiple choices |
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A
question wit multiple choice is a simple, closed-ended question type
that lets respondents select one or multiple answers from a defined
list of choices. |
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Ranking
questions (drag-n-drop/drag-ranking, click-ranking) |
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A ranking question asks respondents to
compare items to each other by placing them in order of preference. |
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Open-ended
questions |
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An open-ended question is a question that
respondents have to answer by using (and writing) their own words. |
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Examples of open-ended question: |
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If you would
like to add any further comments concerning our service, please use the
field below. |
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Pages with text only |
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Sometimes
respondents have to read a text before or instead of answering a
question. To estimate how long respondents need to read a text, count
the number of words the text contains and enter the result in "text 1,
number of words". (A quick way to count the number of words of a text
is to copy and paste the text in a word document.) |
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Personalized questions |
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Certain
complex questions may necessitate more time to answer. For example,
respondents may have to watch a short movie, they may have to read a
long text first, make a complicated calculation, etc.
It
is difficult to estimate the time needed to answer such questions
without knowing the question itself. If you want to take such questions
into account in your estimation, go through the following two steps:
1/ indicate in “type 1: number” how often respondents will have to
answer this or a similar question.
2/ indicate in “type 1: duration” your best estimate of the time
respondents will take to answer this question. |