A researcher wants to determine whether there is a relationship between advertising (denoted ( X ) in thousands of rands) and Sales (denoted ( Y ) in millions of rands). The following data were reported: egin{tabular}{|c|c|c|c|c|c|c|c|c|} hline( X ) & 3 & 6 & 4 & 8 & 5 & 8 & 9 & 7 \ hline( Y ) & 9 & 11 & 9 & 8 & 12 & 13 & 14 & 15 \ hline end{tabular} The correlation coefficient equals to
Added by Bafana B.
Close
Step 1
Mean of X = (3+6+4+8+5+8+9+7)/8 = 6.25 Mean of Y = (9+11+9+8+12+13+14+15)/8 = 11.375 Show more…
Show all steps
Your feedback will help us improve your experience
Tim Thornhill and 52 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
Please assist with question
Jon S.
Please assist with correlation
Tim T.
Please assist with Multiple choice question?
Nick J.
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