11-8 Correlation and Regression Analysis Make a scatter diagram for the data. Use the scatter diagram to describe how, if at all, the variables are related. Subject 27) x Time watching TV y Time on Internet ABCDEFG 9 5 3 8 8 6 7 14 12 8 17 18 9 18 20- y 18+ 16+ 14+ 12+ 10+ 8+ 6+ 4+ 2+ 2 4 6 8 10 12 14 16 18 20 x
Added by Willie S.
Close
Step 1
Step 1: Plot the points (9, 14), (5, 12), (3, 8), (8, 17), (8, 18), (6, 9), and (7, 18) on the scatter diagram. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 91 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
q1: calculate the correlation coefficient from the following data. X Y 9 15 8 16 7 14 6 13 5 11 4 12 3 10 2 8 1 9 Q2: find linear regression from the following data. X Y 1 3 2 7 3 10 4 12 5 14 6 17 7 20 8 24
Madhur L.
Based on each set of data given, calculate the regression line using your calculator or other technology tool, and determine the correlation coefficient. $$ \begin{array}{|r|r|} \hline \boldsymbol{x} & \multicolumn{1}{|c|} {\boldsymbol{y}} \\ \hline 3 & 21.9 \\ \hline 4 & 22.22 \\ \hline 5 & 22.74 \\ \hline 6 & 22.26 \\ \hline 7 & 20.78 \\ \hline 8 & 17.6 \\ \hline 9 & 16.52 \\ \hline 10 & 18.54 \\ \hline 11 & 15.76 \\ \hline 12 & 13.68 \\ \hline 13 & 14.1 \\ \hline 14 & 14.02 \\ \hline 15 & 11.94 \\ \hline 16 & 12.76 \\ \hline 17 & 11.28 \\ \hline 18 & 9.1 \\ \hline \end{array} $$
Linear Functions
Fitting Linear Models to Data
Construct scatter diagrams and find the linear correlation coefficient in each one of the following five samples each of five units and comment on the different situations will arise: Data Set-I: x: 10, 20, 30, 40, 50; y: 5, 25, 30, 35, 45 Data Set-II: x: 50, 40, 30, 20, 10; y: 5, 25, 30, 35, 45 Data Set-III: x: 10, 20, 30, 40, 50; y: 5, 10, 15, 20, 25 Data Set-IV: x: 50, 40, 30, 20, 10; y: 5, 10, 15, 20, 25 Data set-V: x: 10, 10, 30, 50, 50; y: 5, 25, 15, 5, 25
Lucas F.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD