Lecture Notes on Statistical Analysis and Isopods

Flashcards on Statistical Analysis and Isopods

Descriptive Statistics

Characterizes data.

Inferential Statistics

Determines statistical significance, such as t-test.

Mean

The arithmetic average.

Median

The midpoint of the data set.

Mode

The most common value of the data set.

Range

Difference between maximal and minimal values of data set.

Variance

A statistic based on deviations from the mean.

Standard Deviation

The square root of the variance.

Chi Square Test

A form of inferential statistics used to compare observations in discrete categories to see if the pattern is different than random chance.

Null Hypothesis

Predicts no difference between groups across categories.

P-value

The probability of obtaining results as extreme as, or more extreme than, the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct.

Pleon

The abdomen of an isopod.

Pleotelson

The fused last segment of the isopod abdomen.

Pereon

The thorax of an isopod.

Cephalon

The head of an isopod.

Pill Bug

A type of woodlouse that can roll up into a sphere for protection.

Sow Bug

A type of woodlouse that cannot roll up into a sphere and relies on its exoskeleton for protection; genus Porcellio