Step-by-step explanation:
The explanatory is the independent variable, or the variable that goes on the x-axis of a graph. Here, that could be time or political affiliation.
The response variable is the dependent variable, or the variable that goes on the y-axis of a graph. Here, that would be percent that have a positive view of capitalism/socialism.
Answer:
1
Step-by-step explanation:
Gradient (slope) = change in y / change in x
(6-5) / (3-2) = 1/1 = 1
The gradient is 1
Answer:
n=6
So then the correlation coefficient would be r =0.913
And as we can see the value for r is very high and near to 1. so the correct option for this case would be:
C. There is a positive correlation between the heights of men and women.
Step-by-step explanation:
Previous concepts
The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.
And in order to calculate the correlation coefficient we can use this formula:
We have the following data:
Women (X): 66 64 66 65 70 65
Men(Y): 72 68 70 68 74 69
We have quantitative data so no makes sense say that we have categorical data.
For our case we have this:
n=6
So then the correlation coefficient would be r =0.913
And as we can see the value for r is very high and near to 1. so the correct option for this case would be:
C. There is a positive correlation between the heights of men and women.
Answer:
227
Step-by-step explanation:
nth term = a₁ + (n - 1)d
where a1 = first term , n = # of terms and d = common difference.
here we need to solve for the common difference so we can find the missing term, we do so by plugging in what we are given and solving for d
here we are given an nth term, 456 and we are given the first term, -2.
and from what we see there are 3 terms
So we have nth term = 456 , a1 = -2 and n = 3
==> plug these values into the formula
456 = -2 + (3-1)d
==> add 2 to both sides
458 = (3-1)d
==> subtract 1 from 3
458 = 2d
==>divide both sides by 2
d = 229
We then add the common difference to the term before the missing term to get the missing term
-2 + 229 = 227