# WMAN101

 A t-test is used when:
 You wish to compare the mean of 2 populations
 What is the chi square test for used for?
 You have categorical response and predictor variables
 The null hypothesis of a t test states:
 There is no difference between the mean of two populations
 We reject the null hypothesis when:
 The p-value of the test statistic is small (e.g. <0.05)
 What is the slope coefficient in the linear model y=mx+b
 M
 The data we provide in linear regression is
 Response and predictor variables
 The quantities we estimate in linear regression are
 Test statistic and p-values and slope coefficient and intercept
 The null hypothesis in linear regression is
 No relation between the predictor and response variables
 The null hypothesis of a chi square test is
 There is no association between the two categories
 When studying unmarked animals we ask questions related to
 Habitat relationships and abundance
 Point counts are most effective for sampling what?
 Breeding passerines
 A sample unit is what?
 The element of an investigation subject to replication
 The sampling unit when snorkeling is often what?
 the randomly selected stretch of stream
 Distance sampling is based on the idea that
 animals are easier to detect when closer to the observer
 Knowledge of statistics is important at what steps of the scientific method
 Design research to test hypotheses and analyzing data
 In order to be part of a statistical population, each potential sample unit must
 be available for sampling