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 yintercept for the linear regression equation for these data.
Calculate the slope and yintercept for the linear regression equation for these data.
Predicted demand+ _ + _ (temperature)
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
Yintercept = 17.1821
Predicted demand= 17.1821+1.0188(temperature) 
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