Question

Find the regression equations between sales and profit. Sales 10 20 30 25 15 18 22 35 42 profit 22 25 26 10 12 15 16 29 40

Answer 1

Answer:

Given:

The sales and the corresponding profit data.        

Solution:

Concept: “Regression is used to find a variable using a developed relationship with other variable”

Rearrange the order;

Sales        Profit

10             22

15             12

18             15

20             25

22             16

25             10

30             26

35             29

42             40

Following are the relationship equations between sales (x) and profit (y).

i. 2x + 2 = 22

ii. 2x – 8 = 12

iii. 2x – 21 = 15

iv. 2x – 15 = 25

v. 2x – 28 = 16

vi. 2x – 40 = 10

vii. 2x – 34 = 26

viii. 2x – 41 = 29

ix. 2x – 44 = 40"