Attribute Research: Queries!! need help

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  • #3027
    Darsh P
    Participant

    Dear all,
    I have to do a research of comparing two car brands on the basis of 40 attributes.
    I am going to use a scale of -7 to +7 for asking the customers to rate the brands on the attributes.
    My queries are:

    1. how to find a suitable sample size. what tests to use for that?

    2. After i get the ratings. For eg, the average ratings for the following four attributes are:

    Attribute -> Chevrolet..<->..Ford
    …design ->….(+4)…..<->……(+6)
    ..comfort ->…..(-2)…<->……(-1)
    top speed ->….(+6)….<->…..(+7)
    …Brakes ->…..(+7)….<->…..(+9)

    is there a way to to validate the above findings, what all tests I have to use to prove my research is a good one? Plz mention them all.

    Thank you for your time and reply
    Stay Fun

    #3028
    Darsh P
    Participant

    hey Dave, Thanks a tonn for your reply…

    You suggestion of coding and recoding of the responses is excellent and will lessen the tediousness of the job. Now my doubts are:

    1. I have divided the 40 attributes in 5 groups. Each paticipant is evaluating both the brands…so as per what you said, I have correlated groups data.
    For eg. after coding -7 as 1, etc. I have the foll data

    (Attribute
    GROUP) -> Chevrolet..<->..Ford
    …design ->….(12)…..<->……(14)
    ..comfort ->…..(6)…<->……(7)
      speed ->….(14)….<->…..(15)
    …Brakes ->…..(15)….<->…..(14)
    how can i run t tests on this.

    2. still i dont know about selection of sample size.

    3. any good books from which i can learn how to apply these test and gain knowledge about market Research??

    Thank you so very much Dave for your time and reply

    Regards,
    Darshan

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