Answer:
yes it is hard
Step-by-step explanation:
Most people don’t really learn statistics until they start analyzing data in their own research.
Answer:
D) collinearity
Step-by-step explanation:
Collinearity occurs when a few of the independent variables are related or match up. Collinearity increases the large proportion the variance of an estimated regression coefficient which leads to certain regression coefficient having wrong signs. It is used to explain the relationship between two variables.
1 Solve for <span>yy</span> in <span>-2x+y=1.3<span>−2x+y=1.3</span></span>How?
<span>y=1.3+2x<span>y=1.3+2x</span></span>
2 Substitute <span>y=1.3+2x<span>y=1.3+2x</span></span> into <span>2(0.5x-y)=4.6<span>2(0.5x−y)=4.6</span></span>How?
<span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>
3 Solve for <span>xx</span> in <span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>How?
<span>x=-2.4<span>x=−2.4</span></span>
4 Substitute <span>x=-2.4<span>x=−2.4</span></span> into <span>y=1.3+2x<span>y=1.3+2x</span></span>How?
<span>y=-3.5<span>y=−3.5</span></span>
5 Therefore,
<span>x=-2.4<span>x=−2.4</span></span>
<span>y=-3.5<span>y=−3.<span>5</span></span></span>
Solution :
From the figure,
The coordinates of --
A = (-5,-3)
B = (-6,-1)
C = (-3,-1)
D = (-2,-3)
When it undergoes reflection about x-axis, we have the coordinates of the quadrilateral as
A' = (-5,+3)
B' = (-6,+1)
C' = (-3,+1)
D' = (-2,+3)
Now A'B'C'D' is translated 3 units to right, so the coordinates will be --
A" = (-2,3)
B" = (-3,1)
C" = (0,1)
D" = (1,3)
When the quadrilateral moves third and two units up, we get
A"' = (3,3)
B"' = (2,1)
C"' = (5,1)
D"' = (6,3)
