The phrase "straightforward linear relationship" is correct and usable in written English.
It can be used in contexts where you are describing a clear and direct correlation between two variables, often in scientific or mathematical discussions.
Example: "The data shows a straightforward linear relationship between temperature and the rate of reaction."
Alternatives: "clear linear connection" or "direct linear correlation."
In Marx this symbolic expression is present in ideology, which, far from being a straightforward linear relationship between base and superstructure is constantly in flux and which can be captured and changed by the attempted realisations of human possibility.
Furthermore, she said: "There is not a straightforward linear relationship between the number of badgers and the level of TB, so we can't draw any reliable conclusions about badgers and cattle and TB from this work".
However, usually there is no straightforward linear relationship between the sum score and a position on the constructed latent trait.
We retained the categorisations as described above of the ethnic density variables when statistical tests did not suggest a straightforward linear relationship between ethnic density and dependent variable.
The relationship between contrast concentration and CT enhancement is straightforward as there is a direct linear relationship between enhancement change and iodine concentration.
For a pair of non-replicated series where m = 1, PCC is a straightforward and powerful method to test and identify linear relationship between two bivariate normally distributed random variables.
The linear relationship between pulse phase (also pulse width) and HL then emerges in a straightforward way.
Avoiding a straightforward, linear approach, Wilson gives us lightning glimpses of the rapidly changing Megan.
Clearly, harmonics have a simple linear relationship with the fundamental.
To today's eye, the straightforward linear simplicity and the rhythmic schemes created as borders have much merit.
It's not quite a linear relationship, but the direction is clear.
