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
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=-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.
Answer:
Sequencing
Explanation:
Sequencing is the specification of the order in which an algorithm's commands are performed
A sequence is the order in which a computer is supposed to carry out a given command such that a task route can be defined to the computer.
A sequence can also be described as the order of logical steps of instructions given to a computer as written in an algorithm.
Answer:
How did the Middle Colonies differ from the New England Colonies? There were many different religious groups in the Middle Colonies. ... Changed the way that many people practiced their religion. Also it helped bring people together, which led to greater religious toleration.
Explanation:
The correct answer is general delays across all areas of intellectual functioning on the WISC-IV
Explanation: Intellectual Disability is characterized by limitations in general mental skills. These skills are linked to intelligence, activities that involve thinking, problem solving and planning, among others. Intelligence is assessed using the Intelligence Quotient (IQ) obtained by standardized tests. The outcome of a person with Intellectual Development Disorder in this assessment is 75 or less.
2x - 10/4 = 3x
2x - 2.5 = 3x
-2.5=x
X = -2.5
