TY - BOOK AU - Garrett, Henry E. TI - Statistics in psychology and education SN - 978-81-947899-94 U1 - BCir. 519.5 PY - 2023/// CY - New Delhi PB - Nations Press KW - Psychometrics KW - Educational statistics N1 - Includes index; Contents -- 1. The tabulation of measures into a frequency distribution -- 2. Measure of central tendency -- 3. Measures of variability -- 4. The short method of finding the average AD, and SD -- 5. The comparison of groups -- 6. The calculation of the percentiles in a frequency distributions -- 7. When to use different measures of central tendency and variability -- 8. Summary of formulas for finding the measures of central tendency and variability -- 9. Illustrative problems ER -