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Class notes

Psychological Assessment - A Statistics Refresher

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6 pages
2023/2024 Written for academic year
Institution
Notre Dame University
Course
PSYCH
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Lecture notes of 6 pages for the course PSYCH at Notre Dame University

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Scales of Measurement →


Measurement →


→
→

Scale →




Continuous Scale
Ratio Scale

→
Discontinuous Scale
→


Discontinuous Continuous
Nominal Ordinal Interval Ratio
Error
Categorizes & labels variables ✓ ✓ ✓ ✓
Ranks categories in order ✓ ✓ ✓
Has equal intervals/differences ✓ ✓
Has a true or meaningful zero ✓

FOUR LEVELS OF MEASUREMENT
Describing Data
Nominal Scales
Distribution
→ Categorical Scale/Variable
→ Raw Scores


→ Standardized Scores


Ordinal Scales

FREQUENCY DISTRIBUTION
→
Frequency Distribution

→
Simple/Ungrouped FQ

→
Grouped FQ



→
Interval Scales

, Upper Limits MEASURES OF VARIABLITY
Lower Limits
Measure of Variability
Graph
→
Histogram



→
Abscissa (X-axis)


Ordinate (Y-axis)


Bar Graph Range


→ outlier
→
→
→
Frequency Polygon
Interquartile & Semi-quartile Ranges



MEASURES OF CENTRAL TENDENCY → Quartile
Measures of Central Tendency
→ Quarters


Mean
→ median/midpoint
→ quarter-points.


Median



→



→
Mode

→
Interquartile Range
→

Semi-interquartile Range
→

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Uploaded on
February 9, 2024
Number of pages
6
Written in
2023/2024
Type
Class notes
Professor(s)
Dr. al
Contains
All classes
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Subjects

  • psychological assessment
  • psych
  • psychology

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