Interpreting this Statistics question

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Homework Help Overview

The discussion revolves around interpreting a statistics question related to a table presenting summary scores for test periods, specifically focusing on the mean referenced in relation to the fall CBM WIF score and its standard deviation.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to clarify which mean is being referred to in the context of the fall CBM WIF score and expresses confusion over the data presented in the referenced table.
  • Some participants point out that the means and standard deviations for the scores are explicitly stated in the table, suggesting that the original poster may have overlooked this information.
  • Others question whether the specific values mentioned by the original poster correspond to the means and standard deviations listed in the table.

Discussion Status

The discussion is ongoing, with participants providing insights and references to the table in question. There is no explicit consensus yet, as participants are exploring different interpretations of the data presented.

Contextual Notes

Participants note the need to refer back to the table on page 13 for clarity, indicating that the original poster may be struggling with the interpretation of the data and its presentation in the article.

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Homework Statement



On p. 13, they present and discuss Table 1, summary scores for the test periods. At the bottom of the first column, they say that the "fall CBM WIF is 0.85 standard deviations below the mean." What mean are they referring to? What is the value of the mean?

Homework Equations



None needed.

The Attempt at a Solution



Here is the pdf: http://casenex.com/casenex/cecReadings/monitoringEarly.pdf
(Go to page 13 on the paper)

You may have to read several pages to get the context. I would be extremely grateful if someone helped me, I've been stuck wondering what mean they are talking to for an hour already. I thought I was missing something along the way, and I so I've re-read it again and again. The data collectors take a measurement of the fall CBM WIF measures once in fall and once in spring along with other criterion measures. Then they assess the two CBM measures for 20 weeks as well.

I thought that there are two means being referred to in the second column on page 13. The average of the two fall CBM measurements and the two spring CBM measurements.
 
Last edited:
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They tell you on that page:
Means and standard deviations for these scores and for the criterion
variables are shown in Table 1.

-- p13​

... the values in the table are mean and standard deviation.
 
Would the mean be 10.11 and 29.72?
Fall CBM WIF score: 10.11 - 0.85(9.26)
Spring CBM WIF score: 29.72 - 1.24(19.96)
 
I only looked long enough to read the description of what the table values were.
From memory, the first part of the table had headings X and SDX or somesuch.
From the text on page 13, I figure the X column is all means and the SDX column is all standard deviations on the X value immediately to it's left.

If your numbers reflect that then the answer is "yes" and if they do not then the answer is "no".

Could it be that you don't know how to use the data in the article?
 

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