Lecture notes of unit 2 biostatistics 8th semester
Unit-II
Regression: Curve fitting by the method of least squares, fitting the lines y= a + bx and x = a +
by, Multiple regression, standard error of regression– Pharmaceutical examples. Probability:
Definition of probability, Binomial distribution, Normal distribution, Poisson’s distribution,
properties– problems.
Sample, Population, large sample, small sample, Null hypothesis, alternative hypothesis,
sampling, essence of sampling, types of sampling, Error-I type, Error-II type, Standard error of
mean (SEM) - Pharmaceutical examples.
Parametric test: t-test (Sample, Pooled or Unpaired and Paired), ANOVA, (One way and Two
way), Least Significance difference.
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