Question

In: Statistics and Probability

Think of a correlational study that you might be interested in conducting. Now imagine you’ve conducted...

Think of a correlational study that you might be interested in conducting. Now imagine you’ve conducted it. In a few sentences describe the data you collected, the hypothetical results (including the correlation coefficient), and a concluding statement about the results of your (hypothetical) study.

Solutions

Expert Solution

I have collected data of such varieties where there are two variables . I won't know is there is any relationship between those 2 variables . So I can apply statistical tool which measure the relationship between those 2 variables which is called as correlation .

But there's is formula for finding correlation coefficient between these 2 variable is given as

r ={xy - mean(x)*mean(y)}/ {sd(x)*sd(y)}

Suppose I get some value of r =c (say)

Where c is lies between -1 to +1

So we can say than accorngly,

If is c is near to 1 there is positive correlation , that is one if one variable is increases the other variable is also increases and vice versa.

If c is very near to zero or equal to zero.then we say that is no relationship between these 2 variables.

If c is near to -1 then we say that there is negative correlation.

That is one variable is increases the other variable is decreases and vice versa .


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