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Lab This Week
•
Lab #3
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Computer Lab
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Similar locations as last week
•
See lab report for specific locations
and times
•
Lab sheet and data set are posted
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View Full Document The Normal Curve
Standard Scores
•
CAN’T ADD RAW SCORES
–
Different measures on different scales
–
i.e., fitness scores (# sit ups, inches,
time)
•
Provide a common unit
of
measurement across different tests
•
Translate each score into a standard
score
–
THEN add scores together for a total
measure
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View Full Document Standard Scores: zscores
•
Mean of zero
•
Standard deviation of
one
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Formula: page 43
•
z = scoremean/standard deviation
Z above the Mean
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Mean = 12; SD = 4
•
What is the Z score for a raw score of
18?
•
Z
18
= (18 – 12)/4= (6/4) = 1.50
•
18 is 1.50 standard deviations above
the mean
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View Full Document Z below the mean
•
Mean = 12; SD = 4
•
What is the z score for a score of 9?
•
Z
9
= (912)/4 = (3/8) = .75
•
9 is .75 sd below the mean
Standard Scores: Tscores
•
Mean of 50
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Standard deviation of 10
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Formula: page 43
•
T=[10(scoremean)/standard deviation]
+ 50
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View Full Document T above the mean
•
T=[10(scoremean)/standard deviation] + 50
•
Mean = 12; SD = 4
•
What is the T score for 18?
•
T
18
= [10 (1812)/4 ] + 50
= [10 (1.5)] + 50
= 15
+ 50
=
65
•
18 is 1.5 standard deviations above the
mean
•
T=[10(scoremean)/standard deviation] + 50
•
Mean = 12; SD = 4
•
What is the T score for 9?
•
T
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This note was uploaded on 06/25/2008 for the course KIN 3502 taught by Professor Porter during the Spring '08 term at LSU.
 Spring '08
 porter

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