What is the range of values for a correlational coefficient?

What is the range of values for a correlational coefficient?

• A. 0.0 to 1.0
• B. -1.0 to 1.0
• C. -0.5 to 0.5
• D. -2.0 to 2.0

Answer: (B)

The correlational coefficient ranges from -1.0 to 1.0. This range indicates the strength and direction of the relationship between two variables. A value of 1.0 signifies a perfect positive correlation, meaning as one variable increases, the other also increases consistently. Conversely, a value of -1.0 indicates a perfect negative correlation, where an increase in one variable corresponds to a decrease in the other. Values closer to 0 suggest weaker correlations, indicating little to no linear relationship between the variables. Thus, the true range of a correlational coefficient allows researchers to gauge both the degree and direction of correlation effectively, reflecting the full spectrum of relationships that can exist between two sets of data.

The correlational coefficient ranges from -1.0 to 1.0. This range indicates the strength and direction of the relationship between two variables. A value of 1.0 signifies a perfect positive correlation, meaning as one variable increases, the other also increases consistently. Conversely, a value of -1.0 indicates a perfect negative correlation, where an increase in one variable corresponds to a decrease in the other. Values closer to 0 suggest weaker correlations, indicating little to no linear relationship between the variables. Thus, the true range of a correlational coefficient allows researchers to gauge both the degree and direction of correlation effectively, reflecting the full spectrum of relationships that can exist between two sets of data.