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A researcher determines that there is a positive correlation between sleep and test scores; this means that as the amount of sleep is increased, then test scores will increase.
What is positive correlation?
Two variables that move together, or in the same direction, are said to have a positive correlation. When one variable rises while the other rises or when one variable falls while the other falls, there is a positive correlation.
Theoretically, the same external forces can affect both of these separate variables because they travel in the same direction. Two variables that tend to move in the same direction are said to have a positive correlation.
When one variable tends to go down as the other goes down or when one variable tends to go up as the other goes up, there is a positive connection.A relationship in which two variables' values rise or fall together is referred to as a positive correlation.
Rankings for correlations range from +1 to -1. An rise or decrease in one variable always forecasts the same directional change for the second variable in a perfect positive correlation, rated as +1.
Hence,a researcher determines that there is a positive correlation between sleep and test scores; this means that as the amount of sleep is increased, then test scores will increase.
Learn more about positive correlation from here:
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