psych 381 - Saved to this PC Review View Zotero Add-ins Help Grammarly 2. At an
ID: 3450711 • Letter: P
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psych 381 - Saved to this PC Review View Zotero Add-ins Help Grammarly 2. At an ice-skating competition featuring 10 skaters, two judges rated each skater on a scale from 0-10 in increments of .5 points. They each gave one score per skater that considered both technical and artistic components. The scores were as follows: Table 1. Scores for 10 skaters awarded by judge 1 and judge 2. Skaters 1 2 3 4 5 67 89 10 Judge 1 6.0 3.5 8.0 6.5 5.5 8.59.0 6.0 7.5 4.5-65/6.5 Judge 2 5.0 4.5 7.0 5.5 6.0 8.5 8.5 5.0 6.0 5.0= 61/6.1 A. What was the average score across all skaters for each judge? 6.5, 6.1 B. Which judge had more variability in scoring? Judge 1 C. If a skater's total score is an average of the two judges' scores, which skater won? Skater 7 D. Calculate the reliability of this scoring method. What type of reliability measure did you use and what does the result mean? Can we say the rating system in this case was a reliable measure of skater performance?Explanation / Answer
A. The average score for Judge 1 is 6.5 and for Judge 2 is 6.1.
B. Judge 1 had greater variability in scoring (Standard deviation is 1.76) in comparison to Judge 2 (Standard deviation is 1.45)
C. Skater 7 won the competition (average score is 8.5).
D. The reliability of this scoring method can be calcuted by product moment correlation, which would indicate the degree of relationship between the ratings assigned by the judges. In this case, the correlation was calcuted to be 0.88 which indicates a high degree of reliability. We can thus conclude that the rating system in this case was a reliable measure of alter performance.
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