Is the price of a smartphone affected by its display size, camera resolution, or internal storage capacity? Perform a regression analysis on the SmartphoneDCS dataset using MegaStat and answer the following questions. The level of significance is .05. When you copy and paste output from MegaStat to answer a question, remember to choose to "Keep Formatting" to paste the text. a. Do the data conform to Evans' Rule? What about Doane's Rule? Show the calculations to explain the reason for your answers. b. What is the critical value for the F test? c. Perform the regression and state the regression equation. d. Copy and paste the ANOVA table from your analysis. Is the overall fit of the model significant or not? Use your answer to part (b) to explain your decision. e. What is the coefficient of determination and the adjusted coefficient of determination for your analysis? What do these two coefficients tell you about the variation of price in your model?
Is the price of a smartphone affected by its display size, camera resolution, or internal storage capacity? Perform a regression analysis on the SmartphoneDCS dataset using MegaStat and answer the following questions. The level of significance is .05. When you copy and paste output from MegaStat to answer a question, remember to choose to "Keep Formatting" to paste the text. a. Do the data conform to Evans' Rule? What about Doane's Rule? Show the calculations to explain the reason for your answers. b. What is the critical value for the F test? c. Perform the regression and state the regression equation. d. Copy and paste the ANOVA table from your analysis. Is the overall fit of the model significant or not? Use your answer to part (b) to explain your decision. e. What is the coefficient of determination and the adjusted coefficient of determination for your analysis? What do these two coefficients tell you about the variation of price in your model?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Is the price of a smartphone affected by its display size, camera resolution, or internal storage capacity? Perform a
a. Do the data conform to Evans' Rule? What about Doane's Rule? Show the calculations to explain the reason for your answers.
b. What is the critical value for the F test?
c. Perform the regression and state the regression equation.
d. Copy and paste the ANOVA table from your analysis. Is the overall fit of the model significant or not? Use your answer to part (b) to explain your decision.
e. What is the coefficient of determination and the adjusted coefficient of determination for your analysis? What do these two coefficients tell you about the variation of price in your model?
Transcribed Image Text:Smartphone
Price
Apple
Samsung
(Megapixels)
(GB)
Apple iPhone 12 Pro Max
Apple iPhone 12 Pro
Apple iPhone XR
Apple iPhone 12 mini
1100
1
12
128
1000
1
12
128
500
1
12
64
700
1
12
64
Apple iPhone 12
Apple iPhone 11
800
1
12
64
600
1
12
64
Apple iPhone SE 2020
400
1
12
64
Samsung Galaxy Note20 Ultra 5G
Samsung Galaxy S21 Ultra 5G
Samsung Galaxy S21+ 5G
1300
1
108
128
1200
1
108
128
1000
1
12
128
Samsung Galaxy Note20 5G
1000
1
12
128
Samsung Galaxy S20 FE 5G
Samsung Galaxy S21 5G
Samsung Galaxy A52 5G
700
1
12
128
800
1
12
128
500
1
64
128
Samsung Galaxy A71 5G
Samsung Galaxy Z Fold2 5G
Samsung Galaxy A42 5G
Samsung Galaxy A51
Samsung Galaxy A50
Samsung Galaxy Z Flip 5G
Samsung Galaxy Z Flip
500
1
64
128
1800
1
12
256
400
1
48
128
400
1
48
128
300
1
25
128
950
1
12.2
256
1200
1
12.2
256
OnePlus 8 Pro
700
48
128
OnePlus 8
500
48
128
OnePlus Nord N10 5G
300
64
128
OnePlus 9 Pro
1070
48
128
OnePlus 8T
600
48
128
Sony Xperia 5 II
900
12
128
LG V60 ThinQ 5G
650
64
128
Google Pixel 5
LG Velvet 5G
700
12.2
128
600
48
128
Sony Xperia 1 II
Google Pixel 4a
1000
12
128
350
12.2
128
Motorola One 5G Ace
380
48
128
OnePlus Nord N100
210
13
64
LG G8X ThinQ with Dual Screen
500
12
128
Motorola Edge
Motorola Moto g power (2021)
Motorola Moto G Power
Motorola Moto g stylus (2021)
700
64
256
230
48
32
250
16
64
280
48
128
Motorola Moto G Stylus
Sony Xperia 10 ||
LG Wing 5G
Motorola Moto G Play
250
48
128
400
12
128
600
64
256
160
13
32
TCL 10L
250
48
64
Motorola Razr
1300
16
128
O O
o o o o
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