robert7248
robert7248 robert7248
  • 09-05-2019
  • Mathematics
contestada

What is the r-value of the following data to three decimal places?

A. -0.811
B. 0.811
C. 0.901
D. -0.901

What is the rvalue of the following data to three decimal places A 0811 B 0811 C 0901 D 0901 class=

Respuesta :

sethsimmons1234
sethsimmons1234 sethsimmons1234
  • 09-05-2019

Answer:

-0.9007 it would be D. if I'm right

Step-by-step explanation:

X Values

∑ = 34

Mean = 6.8

∑(X - Mx)2 = SSx = 140.8

Y Values

∑ = 54

Mean = 10.8

∑(Y - My)2 = SSy = 164.8

X and Y Combined

N = 5

∑(X - Mx)(Y - My) = -137.2

R Calculation

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

r = -137.2 / √((140.8)(164.8)) = -0.9007

Meta Numerics (cross-check)

r = -0.9007

Answer Link

Otras preguntas

Given: △ABC, m∠C=90° m∠ABC=30°, AL ∠ bisector CL=6 ft. Find: LB
Mike crampton's stockbroker has informed him that he has suffered substantial investment losses. when mike tells his wife, she angrily responds, "i could have t
In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the total body
What is the electron configuration for lithium
Deirdre believes that the cause of all mental disorders can be traced to chemical imbalances in the brain. she believes in which perspective? psychoanalytic cog
A rectangle is inscribed in a circle of radius r. if the width of the rectangle is x, what is the height of the rectangle?
Spanish Question please help
How to find slope and y intercept from the equation ax+by=c?
if a line segment has endpoints A(3x+5, 3y) and B(x-1,-y), what are the coordinates of the midpoint of ab
Solve the equation. Check for extraneous solutions. |x-2|=4x+4