Lab 10: Anthropod Bx Flashcards
Null hypothesis
A prediction of what you should observe when/if the ‘alternative’ (aka ‘research’) hypothesis is false
Given by H0
Taxis
Movement in response to a stimulus
Alternative hypothesis
Aka ‘research’ hypothesis
The hypothesis you’re trying to validate
Given by Ha
P-value
Quantitative representation of how ‘correct’ your null hypothesis is/was (based on how your results compare with established p-values for randomness)
May be r/t your Chi square value as shown on a reference table p.193
Anthropod
Types of Invertebrates (creatures w/o back bones)
(Invertebrates are types of animals)
Exp. insects, spiders, crustaceans
Chi square????
Greek letter X
Kineses
Movement/motion (as in movement of a cell or organism)
Rate of change in direction
Measurement of change in an activity rate 2o to stimlus
Exp. change in speed
Isopod
Type of crustacean
Crustaceans are types of arthropods, and arthropods are types of invertebrates, and invertebrates are types of animals
Null hypothesis FAILS to be rejected if…
Accept your alternative hypothesis if…
Your data turns out to be random, after all
Determined by using a table to relate your chi squared value to your degree of freedom value, with respect to your experiment’s established p value and the table’s listed statistical significance threshold
Degrees of freedom
Statistics jargon
= number of test conditions - 1 (see p.193)
You use it to relate your chi squared values to p-values when the two are related together on a table
Null hypothesis is rejected if…
Your data turns out to NOT be random
Determined by using a table to relate your chi squared value to your degree of freedom value, with respect to your experiment’s established p value and the table’s listed statistical significance threshold
