Hello!
If there is a relationship between dependent and independent variables represented in a scatterplot, <span>The independent variable influences change in the dependent variable whether the points on the scatterplot go up or down from left to right.
The independent variable is the one that influences the dependent variable. If there is a relationship between them, it doesn't matter the direction of the points in the scatterplot, but the correlation coefficient.
If the points go up from left to right, the correlation is called direct correlation (increasing the value of the independent variable will increase the value of the dependent variable).
If the points go down from left to right, the correlation is called inverse correlation (increasing the value of the independent variable will decrease the value of the dependent variable)
Have a nice day!</span>
A joint relative frequency is found by dividing a frequency that is not in the Total row or the Total column by the frequency's row total or column total
<span>16 divided by 40 is 0.40</span>
I = / r where I = current and r = resistance
80 = k / 50 so
k = 400
so we have I = 400/r
when r = 40
I = 400/40 = 10 amps
For number 4 you do x + 19 = 90
90 - 19 = 71 so x = 71
