Ch.2 key term

Question 1

observation

Answer 1

Is a piece of information we gather using our sense - our sight, hearing, smell, and touch to extend their sense.

Question 2

hypothesis

Answer 2

Is a testable idea or explanation that lead to a scientific investigation

Question 3

prediction

Answer 3

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

Question 4

experiment

Answer 4

is a procedure designed to test a hypothesis under controlled conditions

Question 5

variable

Answer 5

is the factor of intrested, which in our example, would be the level of phosphate in the water

Question 6

experimental group

Answer 6

the experimental group would br thoes mussels that receive phosphate in their water

Question 7

control group

Answer 7

the control group would be thoes mussels that do not have phosphate added to their water

Question 8

data

Answer 8

the information that a scientist gather during an experiment, which is often in numeric from is called data

Question 9

correlation

Answer 9

or association between two or more events scientists know that the relative width of a ring on a tree trunk is a good indicator of the amount of rainfall receives in a year

Question 10

statistics

Answer 10

is the colloection and classifcation of data that are in the form of number

Question 11

mean

Answer 11

the mean is the numbers obatined by adding the data for a characteristic and dividing this sum by the number of individuals

Question 12

distribution

Answer 12

a distribution is the relative arrangement of the members of a statistical population

Question 13

probablilty

Answer 13

if you toss a penny, what is the probablilty that it will come up heads?

Question 14

sample

Answer 14

sample is a group of individuals or events slectced to represent the population

Question 15

risk

Answer 15

is the probablilty of an unwated outcome if you have no clue about the correct answer on a multiple choice test with four options

Question 16

model

Answer 16

are repensted of objects or system

Question 17

conceptual model

Answer 17

is a verbal or graphical explanation of how a system work or is organized

Question 18

mathemtiacl model

Answer 18

is an abstract model that uses mathematical language to describe the behaviour of a system.

Question 19

vaule

Answer 19

nature has a value based on what can be extracted. Things valued as a means to something else.

Question 20

decision-making model

Answer 20

A decision-making model is a conceptual model that provides a systematic process for making decisions.