Explain the differences between independent, dependent and controlled variables in an experiment

List the three types of variables that are taken into account when designing an experiment, and briefly define each in your own wrods.

A correlation between two variables implies that ... one variable may or may not directly affect the other variable. the variables have a linear relationship. one of the variables is the independent variable and the other is the dependent variable. one variable directly affects the other variable.

Give one possible function of the observed phenomenon .

Fill in the blank only with either "good" or "true" in the following sentence: If a model has very few parameters, is elegant, and is easy to interpret, it may be too_______to be______. On the other hand, if a model has many parameters and perfectly describes the world, it may be too_____to be ______.

An independent variable is… Select one: typically not included in controlled experiments Factor being manipulated factor showing response variable held constant during an experiment

what is the Expectation and outcome of results, Logical interpretation of the dataand any errors?

The following are reasons why randomized control trials (RCTs) are not used to investigate all research questions, except:    a. RCTs can be expensive, which can make it difficult if funding is limited   b. RCTs can be time-consuming, and it may take months and sometimes years to obtain final results   c. For certain research questions and/or certain types of exposure variables, it may not be ethical to conduct an RCT   d. RCTs are less valid than observational analytical study designs

Explain why we need to control variables that are not being tested in an experiment?

What is control group? Explain the purpose of a control in an experiment.