Which of the following coefficients of correlation indicates the weakest relationship?

Which of the following coefficients of correlation indicates the weakest relationship?

The greater the absolute value of the Pearson product-moment correlation coefficient, the stronger the linear relationship. The strongest linear relationship is indicated by a correlation coefficient of -1 or 1. The weakest linear relationship is indicated by a correlation coefficient equal to 0.

What should you do before you form a hypothesis?

In order to form a hypothesis, you should take these steps:

1. Collect as many observations about a topic or problem as you can.
2. Evaluate these observations and look for possible causes of the problem.
3. Create a list of possible explanations that you might want to explore.

What is the experiment in the scientific method?

In the scientific method, an experiment is an empirical procedure that arbitrates competing models or hypotheses. Researchers also use experimentation to test existing theories or new hypotheses to support or disprove them.

How many factors should a well designed experiment test at one time?

1 factor

Can you ever absolutely prove that a hypothesis is correct?

Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.

What are the key aspects of a well-designed experiment?

Four basic components that affect the validity of an experiment are the control, independent and dependent variables, and constants. These basic requirements need to be present and identified to consider an experiment valid.

What does a well-designed experiment include?

A well-designed experiment includes design features that allow researchers to eliminate extraneous variables as an explanation for the observed relationship between the independent variable(s) and the dependent variable.

What is constantly changed in an experiment?

A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant and unchanged throughout the course of the investigation.