Answer:
The correct option is (a).
Step-by-step explanation:
The Pearson's correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.
Positive correlation is an association amid two variables in which both variables change in the same direction. A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.
Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa.
In this case, it is provided that the Pearson correlation coefficient is, <em>r</em> = +0.88.
A correlation coefficient between ±0.70 to ±1.00 are considered as strong positive correlation.
The scatter plot for correlation coefficient between +0.70 to +1.00 shows:
- A straight and upward moving trend of the point
- A straight line can be formed using these points that slopes up to the right
- Points clustered close to this line that slopes up to the right
Thus, the correct option is (a).
Answer:
2000
Step-by-step explanation:
2(20x30)+ 2(8x30) + 2(20x8).
<span><span>1.
</span>60 is 10
times as much as is what value?</span>
<span><span>2.
</span>60 is 1/10
of what value?</span>
To interpret these given
problems we can first analyse these given word problems to a mathematical expression.
Hence the given becomes then;
Let N be the unknown value.
<span><span>
1.
</span>10 x N = 60</span>
<span><span>2.
</span>N / 10 = 60</span>
To solve these equations we
just have to find the unknown or N.
<span><span>
1.
</span>10N = 60</span>
<span><span>a.
</span>N = 60/10</span>
<span><span>b.
</span>N = 6</span>
<span><span>
c.
</span>10 x 6 = 60</span>
<span><span>2.
</span>N / 10 = 60</span>
<span><span>
a.
</span>N = 60 x 10</span>
<span><span>b.
</span>N = 600</span>
<span><span>c.
</span>600 / 10 =
60</span>
