Biology 4121 - Biometry
Statement of Goals
- To recognize the different kinds of biological data (especially
measurement variables versus attributes).
- To generally know the appropriate kinds of statistical tests
to apply to different biological data.
- To appreciate the role and usefulness of statistics in presenting
and interpreting biological data.
- To understand the basic principles of hypothesis testing in
statistics and their similarities to the scientific method.
- To understand and appreciate that all statistical thinking
is based on probability.
- To fully appreciate the meaning of P < 0.05.
- To understand and fully appreciate the difference between
statistics and parameters.
- To understand and appreciate the difference between parametric
and nonparametric statistics and when to use them.
- To generally recognize the main categories of statistical
tests (analysis of variance, regression, contingency tables, etc.)
and be able to state what these are used for.
- To understand and test for the assumptions common to most
statistical procedures.
- To be able to present summaries of biological data appropriately
either in table or in figure form.
- To be able to critique the statistics used in a biological
paper.
- To thoroughly understand the general linear model used in
so many statistical procedures, and explain the differences between
various models.
- To be able to understand the difference between Type I and
Type II errors in statistics and how these relate to power.
- To thoroughly understand basic terminology such as level of
significance, critical value, null and alternate hypothesis, etc.
- To foster the hypothesis testing approach to looking at biological
data so that questions can be framed in terms of null hypotheses.
- To become familiar with SAS, a major statistical package widely
used throughout the world in solving statistical problems but
to also recognize any given statistical package will be different
from others and will require relearning.
- To generally recognize the different analysis of variance
designs (crossed, nested, repeated measures, etc.).
- To recognize paired or blocked data and know the statistical
procedures for dealing with such data.
- To understand and distinguish between the various types of
regression versus correlation and the implications of using any
of these.
- To appreciate the value of first looking at the distribution
of any biological data to detect outliers, mistakes, non-normality,
and the like.