Midterm Review

Question 0

Variable

Answer 0

Factor in an experiment

Question 1

Parts of scientific method

Answer 1

Purpose, hypothesis, experiment, analysis of outcomes

Question 2

Experimental group

Answer 2

Group altered by variable

Question 3

Control group

Answer 3

Group kept the same, usually representing normal conditions

Question 4

Null hypothesis

Answer 4

States variation is due to chance

Question 5

Alternative hypothesis

Answer 5

States variation was due to experimental variable

Question 6

How to do chi square

Answer 6

Get numbers, put in test table

Question 7

Degrees of freedom

Answer 7

One less than number of variables in chi square test

Question 8

P- value

Answer 8

Probability from chi square test. Accept null hypothesis if greater than .05

Question 9

Mutualism

Answer 9

(+,+)

Question 10

Neutral

Answer 10

(0-0)

Question 11

Predation

Answer 11

(+,-)

Question 12

Commensalism

Answer 12

(+,0)

Question 13

Factors causing rise in population

Answer 13

Births, immigration

Question 14

Factors causing decrease in population

Answer 14

Deaths, emigration

Question 15

Mortality rate

Answer 15

Number of deaths/ number of individuals in an age group