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3 years ago

Which or the following is not a possible value for the correlation coefficient (r)?

2 answers:

6 0

The correct answer is 2– it is NOT a possible value for correlation coefficient (r) because the value of “r” must always be between +1 and –1.

VladimirAG [237]3 years ago

4 0

<h3>Answer: A) 2</h3>

Explanation:

The correlation coefficient r has this range of values

$-1 \le r \le 1$

which can be stated as "r is between -1 and 1, including both endpoints".

As you can see, r = 2 is outside this range and not a possible correlation coefficient. The largest r can get is r = 1 to indicate perfect positive linear correlation.

On the other end of the spectrum, r = -1 means perfect negative linear correlation. In between, r = 0 means no linear correlation at all.

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The price of a item yesterday was $160. today, the price fell to $104. find the percentage decrease

tekilochka [14]

Answer:

-35% decrease in price.

Step-by-step explanation:

Type in "percentage decrease calculator" onto google and click on first result

Here's the equation

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3 years ago

Find the remainder when x3 - 2x2 + x + 1 is divided by (x - 2).?

Basile [38]

3/(x-2)

The answer is x^2+1+3/(x-2)

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3 years ago

If the sum of the expressions in Column A is equal to the sum of the expressions in Column B, what is the value of x? (will give

masha68 [24]

X = 5

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3 years ago

What will be the area of the given shape? (please help)

Leni [432]

Answer:

620

Step-by-step explanation:

To find the area of strangely-shaped structures, like this one, it is easiest if we cut the shape into smaller, more recognizable, shapes..

We can first cut off the top/center rectangle of this shape , which has a width of 10, and a length of 12. The "area" is length × width.

So, we multiply 12 × 10 to find the area of this section.

12 × 10 = 120

if we look at the bottom half, we can see that there is an identical rectangle (because it has the same width of 10 and length of 12) ! So, we can simply add 120 to our total twice to count both of these areas.

(when putting areas of multiple portions together, we add--not multiply)

120 (first/top rectangle)

+ 120 (lower rectangle)

_______________

240

So, our area so far is 240.

Now, we need to find the horizontal (left-right) section of this shape.

We can see that it has a width of 10 (look at the right end), and a length of 38 14 + 10 + 14 (38 total)

So, to find the area of this portion, we will multiply its length × width, which we know is: 38 × 10

38 × 10 = 380.

So, we can now add our areas together:

240

+ 380

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620

So, our area of this shape is 620

6 0

2 years ago

Read 2 more answers

Which number is not a rational number? <br> -5 times 4/11<br> root31<br> 7.608<br> 18.46 continuing

rewona [7]

I think its the second one, the answer does not have a definite and, and cannot be put into a ratio.

3 0

3 years ago

Read 2 more answers