Let's say that the correlation coefficient between X and Y were swapped so that the correlation coefficient between Y and X. If we were to compared the correlation coefficient between X and Y and Y and X. Based on my understanding of correlation coefficient, it doesn't matter if f X and Y were...
Homework Statement
If the slope of the regression line is negative and the correlation coefficient is -0.5, coefficient of determination is:
Homework Equations
coefficient of determination: r2 = 1 - SSE/SST
correlation coefficient: r = Sxy / (√Sxx * √Syy )
The Attempt at a Solution
r =...
Homework Statement
Find the area between the parametric curve, x(t)=cos(t), y(t)=sin^2(t) and the x-axis
Homework Equations
- A = ∫ₐᵇ y(t) x'(t) dt
The Attempt at a Solution
=http://imgur.com/a/UA48d - My work shown in the link provided without the bounds, sorry for not rotating the image and...
Hi,
I was wondering which course will be more beneficial to take first for a first year student majoring in computer science?
Note: I tend to dislike proofs and theories.
Discrete Structures - An introduction to the basic concepts of statistical analysis with special emphasis on engineering...
Homework Statement
Which cases are examples of static equilibrium?
1. A box sliding down a ramp.
2. A baseball after being hit.
3. A box sliding along a horizontal surface.
4. A perfectly upright freely spinning top
5. A freely swinging simple pendulum
6. A spinning astronaut floating out in...
So, I get 3.09 s and 0.990 s when solving using the quadratic equation.
The 0.990 s would be the solution to problem A and the 3.09 s would be the solution to problem.
Homework Statement
a. If a ball is launched straight upwards from the ground with an initial velocity of 20.0 m/s, how long does the ball take to reach a height of 15.0 m on the way up?
b. For the same situation, at what time does the ball reach 15.0 m on the way back down?
c. If a ball is...