No not at all. Correlation doesn't mean causation. Correlation may be non sense. E. G weight of boys may be correlated with pollution. But that doesn't mean pollution increases weight
If x and y are correlated does that mean than x has a causal effect on...
What does correlation does not imply causation mean? Give an example of two real-life variables that are correlated but do not have a causal relationship. Also give an example of two variables that are correlated and that also have a causal relationship.
If two random variables X and Y are independent, are they also
un-correlated ? Separately, if X and Y are un-correlated are they
also independent ? When is the second statement always true
?
5. If two random variables X and Y are independent, are they also un-correlated? Separately, if X and Y are un-correlated are they also independent? When is the second statement always true?
In this case, the causal factor X is stocking location and the
effect factor Y is repeat-purchase frequency. this is a
cross-sectional descriptive research.
irst, convert the units of the three categories to the percentages.^ In-Store Location Increased Substantially*Marginally* 180- ( 68.18 %)- 120- ( 33.33 %) Increased No Increase* Total 121 ( 4.55 %)- 144i (40%)- 2641 (100%)- 360 (100%)- Gourmet (27.27 %) Old- 26.67 %)- As we can see, all three categories of repeat-purchase frequency changed with the location....
If two random variables X and Y are independent, are they also un-correlated ? Separately, if X and Y are un-correlated are they also independent ? When is the second statement always true ?
5. If two random variables X and Y are independent, are they also un-correlated? Separately, if X and Y are un-correlated are they also independent ? When is the second statement always true ?
5. If two random variables X and Y are independent, are they also un-correlated? Separately, if X and Y are un-correlated are they also independent? When is the second statement always true?
uppose that the causal effect of income on health is positive for every person. Then a mean-preserving spread in income will lead to a reduction in average health. 3. S True or False ?
- A causal system has input x[n] and output y[n]. Use the transfer function to determine the impulse response of this system. (a) x[n] = [[n]+} \n - 1]- 38[n – 20, x[n] = [[n] - [n – 1] (b) x[n] = (-3)" u[n], y[n] = 4(2)"u[n] – (7)" u[n]
In digital signal processing. with explanation tnx
will up
15. Is the function y[n]-x[n-1]-x[n-56] causal? a. The system is non causal b. The system is causal >» c. Both causal and noncausal d. None of the above 16. Is the function y[n]x[n] stable in nature? a. It is stable - b. It is unstable c. Both stable and unstable d. None of the above 17. We define y[n] = nx[n]-(n-Dx[n]. Now, z[n] = z[n-1] + y[n]. Is z[n] a a....
3. According to Wikipedia, if X and Y are correlated, there are many explanations: 1. X causes Y; (direct causation) 2. Y causes X; (reverse causation) 3. X and Y are consequences of a common cause, but do not cause each other; 4. X causes Y and Y causes X (bidirectional or cyclic causation); 5. X causes Z which causes Y (indirect causation); 6. There is no connection between X and Y; the correlation is a coincidence. A well-known study...