Luz is selling tomatoes in Sampaloc market. She decided to change the price of her tomatoes every day for seven days to see whether the change in the price of tomatoes would affect sales. Her collected data are shown in the following table. Day Price per Kg Number of Kgs Sold 1 45 30 2 50 25 3 55 25 4 40 40 5 52 26 6 48 35 7 60 15 X у 45 30 50 25 55 25 40 40 52 26 48 35 60 15 Ex= 350 2y= 196 1. Complete the process by solving the y-intercept a (Σy)(Σx2)-(Σx- Σxy) a= n (2x2)-(Σx)2 = (196) (17758)-(350) (9507) 7(17758)-(350)² = ? a = ? xy x² 1350 2025 1250 2500 1375 3025 1600 1600 1352 2704 1680 2304 900 3600 >xy=9507 [x²= 17758 2. Complete the process by solving the slope b b= n(Σxy) – (Σx)(Σy) n(Σχ2)– (Σχ)2 7(9507)-(350) (196) 7(17758)-(350)² ? ? = = b =
Luz is selling tomatoes in Sampaloc market. She decided to change the price of her tomatoes every day for seven days to see whether the change in the price of tomatoes would affect sales. Her collected data are shown in the following table. Day Price per Kg Number of Kgs Sold 1 45 30 2 50 25 3 55 25 4 40 40 5 52 26 6 48 35 7 60 15 X у 45 30 50 25 55 25 40 40 52 26 48 35 60 15 Ex= 350 2y= 196 1. Complete the process by solving the y-intercept a (Σy)(Σx2)-(Σx- Σxy) a= n (2x2)-(Σx)2 = (196) (17758)-(350) (9507) 7(17758)-(350)² = ? a = ? xy x² 1350 2025 1250 2500 1375 3025 1600 1600 1352 2704 1680 2304 900 3600 >xy=9507 [x²= 17758 2. Complete the process by solving the slope b b= n(Σxy) – (Σx)(Σy) n(Σχ2)– (Σχ)2 7(9507)-(350) (196) 7(17758)-(350)² ? ? = = b =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Please answer these 1 and 2 subunits thank you!
Transcribed Image Text:Luz is selling tomatoes in Sampaloc market. She decided to change the price of her tomatoes every day for seven
days to see whether the change in the price of tomatoes would affect sales. Her collected data are shown in the following
table.
Day
Price per Kg
Number of Kgs Sold
45
30
50
25
55
25
40
40
52
26
48
35
60
15
HNm tin
2
X
y
45
30
50
25
55
25
40
40
52
26
48
35
60
15
>x= 350
Sy= 196
1. Complete the process by solving the y-intercept a
(Σy)(Σx2)-(Σx- Σxy)
a
η (Σχ2)-(Σx)2
(196)(17758)-(350)(9507)
7(17758)-(350)²
= ?
a = ?
xy
x²
1350
2025
1250
2500
1375
3025
1600
1600
1352
2704
1680
2304
900
3600
>xy=9507
[x²= 17758
2. Complete the process by solving the slope b
b=
n(Σxy) – (Σχ)(Σy)
n(Σχ2)– (Σχ)2
7(9507)-(350) (196)
7(17758)– (350) ²
= ?
b = ?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman