Differentiate between 2 tailed and one-tailed tests of significance.
A two-tailed test, also known as a non-directional hypothesis, is the standard test of significance to determine if there is a relationship between variables in either direction. Two-tailed tests do this by dividing the .05 in two and putting half on
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Observational study
- Experimental study
Define and illustrate the concept of confidence interval and degree of freedom with the help of an example.
Descriptive Cross-sectional study and Analytical Cross-sectional study
Discrete variable
Enumerate the graph you would prepare for the following, giving their advantages
I) Nominal or ordinal data
The following table shows the number of males and females who arc anemic and non-anemic in a research study.
Test whether there is a relationship between anemia and sex status in the population under study.
Test at 05 level of significance
Quasi experimental design