Year Quarter Overtime hours

2013 1 20

2 30

3 28

4 20

2014 1 24

2 34

3 28

4 21

2015 1 28

2 38

3 31

4 26

2016 1 30

2 41

3 35

4 28

**How to calculate Linear trend line by using regression technique?**

#### Top Answer

Here is the solution... View the full answer

- Thanks. But how can we calcilate it by hand (I mean specially writting in exam)
- ahasnat57
- May 17, 2018 at 6:04am

- Y = a + bX where a and b are computed using a = [(sum of y)(sum of x^2)-(sum of x)(sum of xy)] / [n(sum of x^2) - (sum of x)^2] and b = [n(sum of xy) - (sum of x)(sum of y)] / [n(sum of x^2) - (sum of x)^2]
- yasodharan
- May 17, 2018 at 10:20pm