Need help with reporting scales

[Nana Nadine]

    Hi Guys,
  I have collected some attributte rating data in 7 points scale. The argument around that was that this type of rating scale allow to have a middle. What ar the risk of converting that analysis in 10 points scales. For me it make more sense to report a 7.0 out of 10 mean that reporting a 4.9 out of 7 mean.
  What do you guys thing is more meaningfull?
  Any refrence to back up this would be great.
  Thank you in advance,
  Nadine Nana


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[Richard Ristow]

At 04:01 PM 4/2/2008, Nana Nadine wrote:

>   I have collected some attributte rating data in 7 points scale. [...]

Any reason for re-posting? This was posed, identically, and responded
to, under thread name "Reporting Scales".

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[zstatman]

Simply put, "tread carefully" whenever you attempt to broaden a scale. IMHO,
don't even think about going down such a path!

WMB
Statistical Services

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-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of
Nana Nadine
Sent: Wednesday, April 02, 2008 4:01 PM
To: [hidden email]
Subject: Need help with reporting scales

    Hi Guys,
  I have collected some attributte rating data in 7 points scale. The
argument around that was that this type of rating scale allow to have a
middle. What ar the risk of converting that analysis in 10 points scales.
For me it make more sense to report a 7.0 out of 10 mean that reporting a
4.9 out of 7 mean.
  What do you guys thing is more meaningfull?
  Any refrence to back up this would be great.
  Thank you in advance,
  Nadine Nana


---------------------------------
  Never miss a thing. Make Yahoo your homepage.


---------------------------------
You rock. That's why Blockbuster's offering you one month of Blockbuster
Total Access, No Cost.

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[Richard Ristow]

I'm forwarding this to the list, because I don't think I'm the best
one here to answer it.

At 09:59 AM 4/3/2008, Nana Nadine wrote, off-list:

>Just as a follow up, I have conducted a session scoring analysis
>recently and the client asked me to give him the confidence level of
>the score I was providing (ie. 95% +/-2). The sample used was not
>statistically reliable. The session scoring was based on the rating
>of selected attributes. What I did was to generate the reliability
>"alpha test" scores. The alpha scores were within acceptable range
>but did not tell me the level of confidence of the score. I was able
>to easily pull out of this one. I am just wondering if there a way
>(another test) I could have done/perform this better?

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