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3 years ago

Help pleaseeeeeeeeeeeeeeeeeeeee

Mathematics

2 answers:

Svetach [21]3 years ago

6 0

Answer:

2/11 will be your answer :)

Step-by-step explanation:

Hope this helps ✨

laila [671]3 years ago

6 0

Answer:

2/11

Step-by-step explanation:

They definitley aren't equal, and 2/11 is closer to 0 than 4/5, so therefore it is less.

(hope this helps!)

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Which equation can be used to find 150 percent of500

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Answer:

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= 150 x 5

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If the coefficient of determination is 0.25 and the sum of squares residual is 180, then what is the value of SSY?

Gennadij [26K]

Answer:

And then $SSY=SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2 =240$

C. 240

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

When we conduct a multiple regression we want to know about the relationship between several independent or predictor variables and a dependent or criterion variable.

If we assume that we have $k$ independent variables and we have $j=1,\dots,j$ individuals, we can define the following formulas of variation:

$SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2$

$SS_{regression}=SS_{model}=\sum_{j=1}^n (\hat y_{j}-\bar y)^2$

$SS_{error}=\sum_{j=1}^n (y_{j}-\hat y_j)^2 =180$

And we have this property

$SST==SSY=SS_{regression}+SS_{error}=SSR+180$

If we solve for SSR we got:

$SSR= SSY-180$ (1)

And we know that the determination coefficient is given by:

$R^2 = \frac{SSR}{SSY}$

We know the value os $R^2= 0.25$ and we can replace SSR in terms of SSY with the equation (1)

$R^2 =0.25= \frac{SSY-180}{SSY}= 1-\frac{180}{SSY}$

And solving SSY we got:

$\frac{180}{SSY}=1-0.25=0.75$

$SSY= \frac{180}{0.75}=240$

And then $SSY=SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2 =240$

C. 240

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3 years ago

Simplify<br><br> 1/2 + (3/8 - 1/8)^2

Mandarinka [93]

9/16

Decimal form - 0.5625

You welcome :)

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3 years ago

Y=(1/2)^x +2. What is the horizontal asymptote of this function?

professor190 [17]

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There is one-sided horizontal asymptote $y=2$

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3 years ago