Answer:
Step-by-step explanation:
You need to assume that the slope between the dependent Varian and the numerical independent variable is zero.
In regression analysis, to find the effect of one independent variable on the dependent variable, there has to be no interference from the other independent variables whether they be categorical (dummy) or numerical independent variables.
A dummy variable is one which takes on the value of 0 or 1, to represent the absence or presence (respectively) of a given category which is expected to influence the dependent variable.
When a dummy independent variable is included in a regression model, to know the effect of that dummy or category (e.g. day =1, night =0) on the dependent variable, the influence of the numerical independent variable has to be removed temporarily.
In a regression equation,
Y=a+bX+cK
Y is the dependent variable
a is the intercept on the vertical axis on the graph
b is the slope between the dependent variable Y and the independent numerical variable X
c is the slope between the dependent variable Y and the dummy variable K
Answer:
Step-by-step explanation:
y = x² - 10x + 27
y = ax² + bx + c
This is the general form of the equation for a parabola.
We must convert it to the vertex form
y = (x - h)² + k, where (h,k) are the coordinates of the vertex.
We can do this by completing the square.
The figure below shows that your parabola has its vertex at (5,2).
Answer:
55.56
Step-by-step explanation:
If its 5 or mor add one more if its four or less let it rest
Answer:
horizontal line with a open circle at (20,10) and an closed circle at (30,10)
$ 207.50
Step-by-step explanation:
20.75 is between 20 and 30
From the given table , we can see that
for more than 20, up to 30 pounds, the cost per pound is $10
This means, the pounds greater than 20 and less than 30 cost per pound is $10
More than 20 means pounds not equal to 20. its close to 20
So there is a open circle at 20
Cost per pound remains the same from 20 to 30
So horizontal line with a open circle at (20,10) and an closed circle at (30,10)
Total cost of 20.75 pounds of almonds = 20.75 * 10 = 207.50
