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3 years ago

I need help can anyone help me with this pls

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

3 0

It might be 2.5 but I could be wrong

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Pls answer ASAP........

Brums [2.3K]

Answer: 1/3

Step-by-step explanation:

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3 years ago

You earn the same amount each week at your part-time job. The total amount you earn in 4 weeks is $460. How much do you earn per

almond37 [142]

$115
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3 years ago

Read 2 more answers

One pie needs 1/2 cup of sugar Shelly has 4 and 1/4 cups of sugar how many pies can she make

Nookie1986 [14]

8 pies the 1/4 of a cup doesn’t really fit since you’d need another 1/4th of a cup to make a pie

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4 years ago

If both pairs of opposite sides of the quadrilateral are congruent, then the quadrilateral is a?

Bond [772]

Answer:

B (parallelogram)

Step-by-step explanation:

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3 years ago

The value of the coefficient of correlation ( r) a. can never be equal to the value of the coefficient of determination (r2). b.

gulaghasi [49]

Answer:

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

Step-by-step explanation:

We need to remember that the correlation coefficient is a measure to analyze the goodness of fit for a model and is given by:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The determination coefficient is given by $R= r^2$

Let's analyze one by one the possible options:

a. can never be equal to the value of the coefficient of determination (r2).

False if r = 1 then $r^2 = 1$

b. is always larger than the value of the coefficient of determination (r2).

False not always if r= 1 we have that $r^2 =1$ and we don't satisfy the condition

c. is always smaller than the value of the coefficient of determination (r2).

False again if r =1 then we have $r^2 = 1$ and we don't satisfy the condition

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

7 0

3 years ago