Posted by Jen on Friday, October 21, 2011 at 2:59pm.
Take
m1=(y(2)-y(1))/(2-1)=0.5
m2=(y(3)-y(2))/(3-2)=0.5
Since the slopes between any of the three points equal 0.5, so the first three points are collinear, and m1=m2>0 so the slope is positive.
Can you take it from here?
This is so confusing to me :( what would i do next??
If you wish, you can calculate the coefficient of correlation according to the method you use at school (mayer, median/median, etc.) using the first three pairs of data.
In the given case, the coefficient of correlation should be 1.0 because the first three points are collinear (fall on a straight line). The slope is positive (0.5), so the answer to the fourth question is positive.
I will let you calculate the coefficient of correlation (and confirm that it is 1.0).
Related Questions
Math - For the table that follows, answer the following questions: x y 1 -8 2 -...
Math - Use the following table to answer questions. x y 1 7 3 ? ? 11 7 13 ? ? ...
statistics - . For the table that follows, answer the following questions: x y 1...
stastics- correlation and regression - for the table that follows: answer the ...
maths - In a test there were 25 multiple-choice questions. They were marked as ...
maths - In a test there were 25 multiple-choice questions. They were marked as ...
"le Chat. Principle" #2 - Hi, there are 5 questions and I was ...
Math - In the following table R(t) is the quarterly revenue for an international...
math - What is the Rule for a function table with the following information. A ...
math help - I need help solving this math problem, please: Problem: Angela's...
For Further Reading
