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Slide Notes

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Aggregation Methods

Published on Nov 22, 2015

A brief explanation of the various options for aggregating scores into a summary judgement.

PRESENTATION OUTLINE

Aggregation

Possible ways to get summary judgement
Photo by Chris Heiler

Highest Score

Photo by HooLengSiong

Highest Score Example
Scores - 2,3,4,3,3
Score would be 4

Last Score

The most recent or

Last Score Example
Scores - 2,3,4,3,3
Score would be 3

Power law

a formula to predict overall score: accounts for growth over time
Photo by kevin dooley

Power Law Example
Scores - 2,3,4,3,3
Score would be 3

median

The middle score when scores are placed in order
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Median Example
Scores - 2,3,4,3,3
Score would be 3

mode

The score that occurs most often
If there is no mode or more than one mode then Synergy will report the higher option.
Photo by kevin dooley

Mode Example
Scores - 2,3,4,3,3
Score would be 3

mean

Average of all scores
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Mean Example
Scores - 2,3,4,3,3
Score would be 3

No aggregation

Teacher makes the judgement
A zero (0) doesn't necessarily mean that the student is getting a 0. It may simply be how the score is displayed in ParentVue until the teacher makes their judgement and enters a score.
Photo by toddwendy

No Aggregation Example
Scores - 2,3,4,3,3
Score would be 0 or N/A until teacher entered a score

teacher judgement

  • Always best way
  • Override scores whenever necessary
Photo by Scott*

Consistant

Most of the time all methods produce same result
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Only works

If teacher uses 1-4 scale