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earnstyle [38]
2 years ago
8

There is a green 1 story house. Everything is green. The sofa, kitchen, everything you can imagine in a house. What color are th

e stairs to the top floor?
Social Studies
1 answer:
Morgarella [4.7K]2 years ago
3 0
There no stairs unless the so green
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3.6.46-T Consider the following sample data for two variables. x 7 8 5 3 9 y 7 5 9 7 7 a. Calculate the sample covariance. b. Ca
Mrac [35]

Answer:

1. Co-variance= -1.2

2. correlation coefficient= -0.4404

3.  There is weak negative relationship between x and y.

Explanation:

1.

Co-variance= Cov(x,y)= sum[(x-xbar)(y-ybar)]/n

xbar=sumx/n=32/5=6.4

ybar=sumy/n=35/5=7

x 7 8 5 3 9

x-xbar 0.6 1.6 -1.4 -3.4 2.6

y 7 5 9 7 7

y-ybar 0 -2 2 0 0

(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0

Cov(x,y)= sum[(x-xbar)(y-ybar)]/n=-6/5=-1.2

Cov(x,y)=-1.2

2.

correlation coefficient=r

r=\frac{sum(x-xbar)(y-ybar)}{\sqrt{sum(x-xbar)^2sum(y-ybar)^2} }

x 7 8 5 3 9

x-xbar 0.6 1.6 -1.4 -3.4 2.6

y 7 5 9 7 7

y-ybar 0 -2 2 0 0

(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0

(x-xbar)² 0.36 2.56 1.96 11.56 6.76

(y-ybar)²  0 4 4 0 0

r=\frac{-6}{\sqrt{23.2(8)} }

r=-0.4404

3. Since the value of correlation coefficient is negative and less than 0.5 , so, we can say that there is weak negative relationship between x and y.

7 0
3 years ago
What do you call to a complicated network of feeding interrelastionship?
vladimir2022 [97]

Answer:food web

Explanation:

8 0
3 years ago
Sharon wanted to determine if the juvenile boot camp program her county had initiated had a noticeable impact on recidivism. She
vazorg [7]

The correct answer is A. The independent variable

Explanation:

In this experiment, the boot camp is the factor Sharon considers can influence recidivism (the main variable studied or dependent variable). In this context, the boot camp is the independent variable because this is the factor that is considered a "special treatment" in the experiment because only some were in the boot camp program. Also, in experiments the independent variable influences another variable and this is independent because it is not affected by other variables. This occurs with the boot camps because boot camps influence recidivism but not the opposite.

3 0
3 years ago
Kennedy and Adolphs, in their article about stress in the city, reported two findings in which activity in the brain was associa
Zigmanuir [339]

Answer: The population density of one's current geographic residence.

Explanation:

Daniel Kennedy and Ralph Adolphs, both from the California Institute of Technology, noted in an essay published in the same issue of Nature.

Kennedy and Adolphs noted that city populations might, to a certain extent, be a self-selecting population. "There are wide variations in individuals' preferences for, and ability to cope with, city life: some thrive in New York City; others would happily swap it for a desert island," they wrote in their essay. One key reason for this might be "the perceived degree of control that people have over their daily lives."

Kennedy and Adolphs Also suggested future work focusing on ways of "softening" the urban landscape via better architecture and urban planning.

Even though city dwellers showed differences in their brains, their levels of the stress hormone cortisol was on par with their rural peers.

Social threat, lack of control and subordination are all likely candidates for mediating the stressful effects of city life, and probably account for much of the individual differences."

Dr Daniel Kennedy and Prof Ralph Adolphs, both at the California Institute of Technology, said that there are wide variations in a people's preferences for, and ability to cope with, city life.

7 0
2 years ago
Psychosocial development in late adulthood is best understood by looking at clusters of theories such as:____________.
insens350 [35]

Answer:

Psychosocial development in late adulthood is best understood by looking at clusters of theories such as: self-theories and stratification theories

Explanation:

6 0
3 years ago
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