0
Causation, correlation...
Still curious? Ask our experts.
Chat with our AI personalities
Jordan
Blake
ViviAdd your answer:
Earn +20 pts
What does no trend mean?
Usually the expression is employed in the context of the relationship between a dependent variable and another variable. The latter may or may not be independent: often it is time but that is not necessary. In some cases there is some indication that that there is a linear relationship between the two variables and that relationship is referred to as a trend.Note that a trend is not the same as causation. There may appear to be a strong linear trend between two variables but the variables may not be directly related at all: they may both be related to a third variable. Also, the absence of linear trends does not imply that the variables are unrelated: there may be non-linear relationships.
What can a line graph tell you the relationship between the variables in an experiment?
A line graph can tell you how changes in one variable are related to changes in the other. A line graph cannot show causality. A line graph can show non-linear relationships which some other analytical techniques may not identify. In particular, they are good for identifying relationships between the variables that change over the domain. A line graph can also help identify points where the nature of the relationship changes - eg tension and breaking point, or temperature and phase. The spread of observations about the "line of best fit" gives a measure of how closely the variables are related and how much of the measurement is systemic or random error.
What does this equal y equals 2x plus 5?
If you substitute some value for x, you can calculate the corresponding value for y.If you don't know the value for x and y, you have a relationship between two variables, that can not be further simplified.If you substitute some value for x, you can calculate the corresponding value for y.If you don't know the value for x and y, you have a relationship between two variables, that can not be further simplified.If you substitute some value for x, you can calculate the corresponding value for y.If you don't know the value for x and y, you have a relationship between two variables, that can not be further simplified.If you substitute some value for x, you can calculate the corresponding value for y.If you don't know the value for x and y, you have a relationship between two variables, that can not be further simplified.
Do you have to use the same variables for all equations when creating a system of equations?
The idea is to work with the same variables, but it is possible that some of the variables are missing in some of the equations.
What is difference between parameter and arbitrary constant?
A parameter is a variable which takes different values and, as it does, it affects the values of some other variable or variables.
