
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 pvalue of the test statistic is small (e.g.
<0.05) 

What is the slope coefficient in the linear model y=mx+b 


The data we provide in linear regression is 

Response and predictor variables 

The quantities we estimate in linear regression are 

Test statistic and pvalues 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? 



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 
