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yawa3891 [41]
2 years ago
6

John’s parents recorded his height at various ages between 36 and 66 months.

Mathematics
1 answer:
timurjin [86]2 years ago
7 0

Answer:

Step-by-step explanation:

a)General least square regression line is ,

Y=a+(b*x)

Where,a=intercept. b= slope

To get line just find values of a and b.

Use Excel to find values.

First enter values of variable "age" that is y in the column A that is A1to A5 and values of variable "height" in the column B, B1 to B5.

Then for value of a use functufuas ,

=INTERCEPT(A1:A5,B1:B5)

Then hit enter ,therefore a=20.4595

For b use function as. =SLOPE(A1:A5,B1:B5)

Then hit enter.therefore b=0.3738

Therefore equation of least square regression line is

Y=20.4595+(0.3738*x)

b) to predict height at age 21 years or 252 month just put value of x=252 in the above equation.

Y=20.4595+(0.3738+252)

Y=20.4595+94.1976

Y=114.6571

Conclusion: height will be 114.6571 inches when age change by 1 unit.

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asambeis [7]

Any polygon given by a list of 2D vertex coordinates has area given by the shoelace formula.

That's the absolute value of half the sum of the cross products of the sides.  We form the table of the vertices. We include the first vertex at the end, then calculate the cross product of the side, (a,b) then (c,d) gives cross product ad-bc.

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3 years ago
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2 years ago
if the length of a rectangle is 4 more than the width and if the perimeter 0of rectangle is 52, what is the width of the rectang
Ilia_Sergeevich [38]

Answer:15

Step-by-step explanation:

rectangle so we know two sides are equal and other two side are equal so we have X+X+X+4+X+4

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2 years ago
How do you find the slope between (-9,10) and (-7,5)
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8 0
3 years ago
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