Statistical methods in psychological and educational research / by M. Rajamanickam

Includes appendices, bibliography and index.

PART I : DESCRIPTION STATISTICS AND MEASUREMENT : Introduction -- The role of statistics in measurement -- Frequency distribution -- Measures of central tendencies -- Measures of variability -- The importance of the measure of Skewness and Kurtosis -- Correlation methods -- PART II : INTERNAL STATISTIC AND MEASUREMENT : Introduction -- Inferential statistics -- Probability and chance -- Binomial distribution -- Testing hypothesis : one tailed, two tailed and two types of errors -- Chi-square -- Duncan's range test : a multi-group design -- Analysis of variance and the F-test -- Significance of mean differences : critical ratio (z-ratio) -- Estimation of errors in measurement -- PART III : STATISTICS IN PSYCHOLIGICAL MEASUREMENT : Introduction -- Reliability of measurement -- Validity of measurement -- Norms and test scales for measurement -- Factor analysis