Category 1
the number obtained by adding the data for a characteristic and dividing this sum by the number of individuals
What is mean?
piece of information we gather using our senses
observation
The first step of the scientific method
Observation
a logical statement about what will happen
What is prediction?
An educated guess
What is hypothesis?
The factor that is measured in an experiment
What is dependent variable?
The factor that is manipulated in an experiment
What is independent variable?
The group that receives the experimental treatment
What is experimental group?
a procedure designed to test a hypothesis under controlled conditions
What is experiment?
The information a scientist gathers in an experiment
What is data?
the collection and classification of data that are in the form of numbers
What is statistics?
Find the mean of the following numbers: 20,40,60 and 80.
What is 50?
A group of individuals selected to represent the population
What is sample?
the chance that something will happen
What is probability?
the relative arrangement of the members of a statistical population
What is distribution?
The probability of an unwanted outcome
What is risk?
representations of objects or systems
What is model?
a verbal or graphical explanation of how a system works or is organized
What is conceptual model?
An example of a graphical model
What is maps and charts?
The group in the experiment that is not manipulated
What is control group?
What is 4/52?
Identify the independent and dependent variables in the following: David changes his laundry detergent to get his clothes to smell better.
independent: detergent
dependent: smell
Scientists use statistics to
What is analyze data?
The average mass of a penguin in a colony is an example of
What is mean?