env ch2 test review

Question 1

the number obtained by adding up the data for a given characteristic and dividing this sum by the number of individuals

Accepted Answer

mean

Question 2

sample is the chance that something will happen

Accepted Answer

False

Question 3

a mathematical model is one or more equations that represents the way a system or process works

Accepted Answer

True

Question 4

scientist repeat experiments to make sure the results are meaningful

Accepted Answer

True

Question 5

risk is the of a negative outcome

Accepted Answer

probability

Question 6

the probability of an unwanted outcome

Accepted Answer

risk

Question 7

is considered to be the factor of interest in an experiment

Accepted Answer

variable

Question 8

a variable is the group that does not receive the experimental treatment

Accepted Answer

False

Question 9

if the results of your experiment do not support your hypothesis, you should

Accepted Answer

publish results anyway

Question 10

in an experiment, the experimental treatment differs form the control treatment only in the being studied

Accepted Answer

variable

Question 11

a procedure designed to test a hypothesis under controlled conditions

Accepted Answer

experiment

Question 12

in a population, characteristics such as size will often be clustered around the

Accepted Answer

mean

Question 13

the group of individuals or events selected to represent the population

Accepted Answer

sample

Question 14

3D models you can touch

Accepted Answer

physical

Question 15

the collection and classification of data that are in the form of numbers.

Accepted Answer

statistics

Question 16

the info that a scientist gathers during an experiment and is often in numeric form

Accepted Answer

data

Question 17

scientist form hypotheses to answer questions

Accepted Answer

testable

Question 18

principles or standards we consider important

Accepted Answer

values

Question 19

to fully understand a complex environmental issue, you may need to consider

Accepted Answer

all of the above

Question 20

the group that receives the experimental treatment

Accepted Answer

experimental group

Question 21

a logical statement about what will happen if the hypothesis is correct

Accepted Answer

prediction

Question 22

a hypothesis is a testable explanation for an observation

Accepted Answer

True

Question 23

a conceptual model is a verbal or graphical explanation for how a system works or is organized

Accepted Answer

True

Question 24

a conceptual model that provides a systematic process for making decisions

Accepted Answer

decision making model

Question 25

representations of objects or sytems

Accepted Answer

model

Question 26

models used by scientist include

Accepted Answer

both a and c

Question 27

reading scientific reports is an example of

Accepted Answer

gathering information

Question 28

correlations are reliable associations between two or more events

Accepted Answer

True

Question 29

a statistical population is a group of similar things that a scientist is interested in learning about.

Accepted Answer

True

Question 30

the relative arrangement of the members of a statistical population

Accepted Answer

distribution

Question 31

piece of info we gather using our senses

Accepted Answer

observation

Question 32

a conceptual model represents a way of thinking about relationships

Accepted Answer

True

env ch2 test review

Questions 32

env ch2 test review

Questions 32