Mathematics College

the averages of the squared differences between the data values and the mean is known as​

Answers

Answer 1
Variance is the answer.

Explanation:

The variance is the average of the squared differences from the mean. To figure out the variance, first calculate the difference between each point and the mean; then, square and average the results.

Related Questions

y varies directly with x. When x is 20, y is 8. Find y when x= 15.
y=
type your answer...

Answers

Answer:

The value of y=6

Step-by-step explanation:

Given that y varies directly with x

Using the formula

y ∝ x

y=kx

Where k is the constant of proportionality

In order to find 'k' use the given condition

y=8  when  x=20

y=kx

k=y/x  

 = 8/20

 = 2/5

Thus, the equation to find 'y' is

y=2/5x

when x=15 then

y=2/5(15)

 = 6

Thus, the value of y=6

expand 2 + 4 how do i do this

Answers

Answer:

6

Step-by-step explanation:

You could expand t to 1+1+1+1+1+1 which would give you 6.

Answer:

2+4=6

Step-by-step explanation:

PLEASE ANSWER IN 50 MIN I WILL MARK BRAINLIEST
a 2/3 cup full barrel of sand weighs 449 lbs. When the barrel is 1/2 full of sand, it weighs 348 lbs. When empty, the barrel weighs how much lbs

Answers

Answer:

174lbs

Step-by-step explanation:

I'm not positive but its my best shot

PLS HELP! it’s question 12

Answers

Answer:

yes

Step-by-step explanation:

it is going by 5s.

Answer:

Yes. This is because if you plot the numbers on a ration table or see the graph points, you can see a pattern: you multiply by 5. The equation to solve this would be y=5x. Another reason why this is proportional is that the graph starts from the origin (0,0) This is the opposite for non-proportional relationships. Hope this helps! :)

What is the order of how a bill becomes a law?

Answers

After both the House and Senate have approved a bill in identical form, the bill is sent to the President. If the President approves of the legislation, it is signed and becomes law. If the President takes no action for ten days while Congress is in session, the bill automatically becomes law.

Find the slope and y-intercept (solve for y) -4y+2x= -20

Answers

Y=5+1/2x that the answer

I need help, please
it is do tomorrow

Answers

Answer:

8) 21 milliliters

i am not completly sure but it is NOT the whole

9) .4 & 40%

7) 9670 feet

10) a) $7200       b)350,000

Step-by-step explanation:

cuz 35% of 60 is 21

cuz 120/300 is .4 and if you take 300 * .4 it equals 120

the half-life of radium-226 is about 1,590 years. How much of a 100mg sample will be left in 500 years

Answers

Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz

I know the best answer ever (*says sarcastically*)

-1/4 x + 10=7 show work

Answers

-1/4x+10=7

-1/4x=7-10

-1/4x=-3

-12x=-1

x=1/12

A liter of water contains about 3.35•10^25 molecules. A certain river discharges about 2.8•10^8 litter of water every second. About how many molecules does the ...

Answers

Answer: [tex]9.38\times10^{33}[/tex]

Step-by-step explanation:

Given: Molecules in a liter of water = [tex]3.35\cdot10^{25}[/tex]

A certain river discharges about [tex]2.8\cdot10^8[/tex] liter of water every second.

Molecules in river = [tex]3.35\cdot10^{25}\times2.8\cdot10^8[/tex]

[tex]=3.35\cdot2.8\cdot10^{25}\cdot10^8\\\\= 9.38\times10^{25+8}\ \ \ \ [a^m\cdot a^n=a^{m+n}]\\\\= 9.38\times10^{33}[/tex]

Hence, there are [tex]9.38\times10^{33}[/tex] does the molecules in river per second.

Find the formula for an exponential function that passes through the two points given. (x, y) = (0, 4) and (x, y) = (3, 32)

Answers

Given:

The exponential function passes through two points (0,4) and (3,32).

To find:

The formula for the exponential function.

Solution:

The general form of an exponential function is

[tex]y=ab^x[/tex]          ...(i)

where, a is initial value and b is growth factor.

The exponential function passes through two points (0,4) and (3,32). It means the function must be satisfy by these points.

Putting x=0 and y=4 in (i), we get

[tex]4=ab^0[/tex]

[tex]4=a(1)[/tex]

[tex]4=a[/tex]

Putting a=4, x=3 and y=32 in (ii), we get

[tex]32=4b^3[/tex]

Divide both sides by 4.

[tex]8=b^3[/tex]

Taking cube root on both sides.

[tex]2=b[/tex]

Putting a=4 and b=2 in (i), we get

[tex]y=4(2)^x[/tex]

Therefore, the required formula for the exponential function is [tex]y=4(2)^x[/tex].

What is the slope of the line that passes through the points (8, -9) and (14,−9)? Write your answer in simplest form.

Answers

Answer:

A horizontel line equation y=0x+-9 the slope is zero slope

Step-by-step explanation:

Answer:

The slope is 0.

Step-by-step explanation:

m=y²-y¹/x²-x¹

m=(-9)-(-9)/14-8

m=0/6

m=0

Help with number 5 show work and explanation
ASAP PLEASE!!!!!!

Answers

Here !!!!!!!!!!!!!!!!!!!!

How much is 3/5 of 31/8 ?

Answers

Answer:

2.325

Step-by-step explanation:

i used a calculator ,i think i did it right lol

2 cm on a map is equal to 3 km in real life. If two points are 8 cm apart on the map, how far apart are they in real life?

Answers

Answer:

12km in real life.

Step-by-step explanation:

Please mark brainliest.


If the 3rd term of a geometric series is
-3 and the sum of the 4th term and the 5th term is –6, find the 7th term of the series.

Answers

Answer:

-3or-48

Step-by-step explanation:

in this question you will get two equation which will used to find common ratio and first term and finally you will find 7th


A local store has a puppy that weighs 88 ounces. How many pounds does the puppy weigh given that 1 pound = 16 ounces?

Answers

Divide 88 by 16

88/16 = 5.5

It weighs 5.5 pounds

Answer:

5.5

Step-by-step explanation:

if you divide 88 ounces by 16 it will give yout he answer of 5.5.

88/16 = 5.5

Divide 64.5 by 0.015, leaving the answer in standard form

Answers

Answer:

4.3 *10^3

Step-by-step explanation:

Triangle JKL, shown below, is translated 7 units to the right
then reflected across the x-axis.
у
+6
K
+51
4
J
VL
*3
*2
1
-6 -5 -4 -3 -2 -1 0
*1 2 3 4 5 6
1
2.
3
5 6
What will be the new coordinates of point J, after the
triangle has been transformed?

Answers

Answer:

dont known sorry

Step-by-step explanation:

The perimeter of the parallelogram is 30 feet. Find m.

Answers

m=11

Step-by-step explanation:

the top side is 4, so that means the bottom side will also be 4, add them both, you get 8, 30-8 = 22, 22/2 = 11, m=11

Answer:

3

Step-by-step explanation:

2(4m + m) = 30

8m + 2m = 30

10m = 30

Divide by 10 on each side

m = 3


Check:

2 ( (4 x 3) + 3) = 30

2 ( 12 + 3) = 30

24 + 6 = 30

30 = 30

Hope this helps! :)

Point-slope form of the line that passes through (-8,2) and is perpendicular to a line with a slope of -8

Answers

Answer:

y-2=1/8(x+5)

Step-by-step explanation:

1. Perpendicular lines have opposite slopes. To get the new slope, take the slope of the first line and turn it to make it the opposite reciprocal.

Since it's -8, the opposite of it is 1/8.

2. Now, use point slope: y-y1=m(x-x1). Plug in the values of the ordered pair and the slope into the equation.

y-2=1/8(x+8)

And that's your answer

what is 8/5 divided by 1/4

Answers

32/5 or simplified is 6 2/5 or in decimal it’s 6.4
Decimal Form Answer: 6.4Fraction Form Answer Simplified: 6 2/5Fraction Form Answer not Simplified: 32/5Hope this helps! have a great day! <3

How many board feet of lumber would you have if you had 5 pieces of 4"x 2 points
4" X 8'?*

Answers

Answer:

6

Step-by-step explanation:

Which equation can maya use to find how much of the project she painted in all

Answers

Answer:

D

Step-by-step explanation:

Emily and Andy each go to a hardware store to buy wire.The table shows the relationship between the cost and the length of wire.
a. Emily needs 22 feet of wire. How much will she spend on wire?
b.Andy needs 15 yards of wire.How much will he spend on wire?
Inches. PLEASE HELP ME​

Answers

Answer:

For part A-Emily would spend $22.70 on 22 feet of wire. For part B- Andy would spend $2.30 for 15 yards of wire.

Step-by-step explanation:

The cost is going down 10 cents by the foot, so getting 22 feet into 264 inches then having 165 into 164 and going up by the ten ending the number in four. Same with the yards in feet then the feet into yards and going down by 10. Hope it helps and makes sense.

pls help in the next 2 mins!! 12/2*-5

Answers

Answer:

-30

Step-by-step explanation:

I dont have an explanation

Evaluate the following expression. y + 9 when y = 12

Answers

Answer:

21

Step-by-step explanation:

y+9 = ?

y=12

12+9=21

Answer:

3

Step-by-step explanation:

Please help me

Solve the inequality.
12 - }>8-23

Answers

Answer:

Letter D

Step-by-step explanation:

D KO PO SURE SORRY PO KUNG MALI ✌

I think it’s D I’m not sure though

Simplify 24x^6/12x^-8?

Answers

Answer:

2x^14

Step-by-step explanation:

Rewrite the following without an exponent.

Answers

Answer:

5/6

Step-by-step explanation:

You just need to turn the denominator and numerator's positions upside down.

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