First Time Doing Time Series

[pauliet987]

Hello, 

I just found out that what I am trying to do would work best with a times series code. I have never done a times series code, so I was looking for some help.  Essentially, I am trying to predict how many positive cases will occur the next week based on all previous number of labs performed in previous weeks (about 6 months). Example:

Week_Start   Laboratory.   Labs_Performed  Number_of_Positive_Cases

11/04/2018.   Lab1.            230                        31

11/04/2018.   Lab2.            300.                       40

11/11/2018.   Lab1.             260                        45

11/11/2018.   Lab2.             325.                       46

 How do I do a time series for just lab1 values and another linear time series with just lab2 values for the next week (week start 11/18/2018)? 

Thank you for any help you can give!