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Title: Statistics 1 Statistics • Statistics deals with the collection, processing, analysis and interpretation of numerical data. • It is critical for the credibility of any data collection and interpretation to utilize proper statistics. • Biology • Meteorology • Oceanography 2 Statistics - definitions • Statistics the mathematics of the collection, organization, and interpretation of numerical data, especially the analysis of population characteristics by inference from sampling • • Population the set containing all possible elements of interest in a study • • Sample a subset of a population • • Inferential Statistics using information obtained from a sample to draw conclusions about a population (one infers meaning from the sample and projects it on the population as a whole. • • Frequency Number of times an event occurs 3 Statistics - definitions • Frequency Distributions A table that divides a set of data into a suitable number of classes (categories or intervals), showing the number of times an observation fits into that class (category or interval).

It is important to consider the interval size when creating a proper frequency distribution to ensure one captures the details of the data. Chris Brown 2005 Rar. • ---As a general rule of thumb, let the number of intervals equal 5log(N) where N is the size of the sample or population1. Panofsky and G. Brier, Some Applications of Statistics to Meteorology, Earth and Minearl Sciences Continuing Education, University Park, PA. 4 Frequency Distribution • Frequency distribution of the number of rain-days in the month of January Camden square London over the years 1858-1947 5 Histogram • Histogram - A graphical display of a frequency distribution. A histogram is created by allocating the data in various bins. 6 Pie Chart • Pie chart A circular chart divided into sectors indicating the relative frequency or percent of a specific sample.