Question

The following table shows the hot dogs bought from a street vendor over the course of eight days​ ("Demand"). Also shown is the temperature for each day in degrees Celsius.

Temperature	21	10	25	16	9	14	17	23
Demand	49	31	35	39	19	23	44	35

Calculate the slope and​ y-intercept for the linear regression equation for these data.

Calculate the slope and​ y-intercept for the linear regression equation for these data.

Predicted demand+ _ + _ (temperature)

Answer 1

We can use here Excel for regression equation

Step 1) Enter data in Excel .

Step 2) Data >>Data analysis >>Regression >>Select y and x values separately >>Ok

Slope =1.0188
Y-intercept = 17.1821

Predicted demand= 17.1821+1.0188(temperature)