Brian, Chris, and Damien took a math test that had 20 questions. The number of questions Brian got right is 14 more than 1/4 the
2 answers:
Answer: only true statement is ---The number of questions Brian got right is 14 more than 1/4 the number of questions Chris got right
Step-by-step explanation:
Let Brain and Damien both scored x while Chris scored y then
According to the first relation
where x and y are less than or equal to 20 .
For y=20 , x=19 possible value
According to the second relation
where x and y are less than or equal to 20 .
For y=20 , x= 23 not possible
so only true statement is ---The number of questions Brian got right is 14 more than 1/4 the number of questions Chris got right
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Answer:
The answer is OPTION (D)log(y)=0.326x+0.687
<h2>Linear regression:</h2>
It is a linear model, e.g. a model that assumes a linear relationship between the input variables (x) and the single output variable (y)
The Linear regression equation for the transformed data:
We transform the predictor (x) values only. We transform the response (y) values only. We transform both the predictor (x) values and response (y) values.
(1, 13) 1.114
(2, 19) 1.279
(3, 37) 1.568
(4, 91) 1.959
(5, 253) 2.403
X Y Log(y)
1 13 1.114
2 19 1.740
3 37 2.543
4 91 3.381
5 253 4.226
Sum of X = 15
Sum of Y = 8.323
Mean X = 3
Mean Y = 1.6646
Sum of squares (SSX) = 10
Sum of products (SP) = 3.258
Regression Equation = ŷ = bX + a
b = SP/SSX = 3.26/10 = 0.3258
a = MY - bMX = 1.66 - (0.33*3) = 0.6872
ŷ = 0.3258X + 0.6872
The graph is plotted below:
The linear regression equation is log(y)=0.326x+0.687
Learn more about Linear regression equation here:
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Answer:
2 weeks
Step-by-step explanation:
y = mx + b
y = total number of chapters read =
m = number of chapters read per week =
x = number of weeks = what we're solving for
b is not needed to find this solution
=
x divide
from both sides
x = 2 weeks