How do you find the mean and standard deviation?

How Do You Find The Mean And Standard Deviation?

Answers

Answer 1
To find the mean you have to add up all the numbers, then divide by how many numbers there are. To find standard deviation you need to find the mean, then for each data point, find the square and it’s distance to the mean, sum the values, then you divide by the number of data points.

Related Questions

Question 9 of 10
Which of the following is not found on a check?
OA. The routing number
OB. The account number
OC. The account owner's Social Security number
OD. The account owner's name and address
SUBMITTED

Answers

Answer: B. ACCOUNT OWNERS SOCIAL SECURITY NUMBER.

Step-by-step explanation:

A recipe for fruit punch calls for 3 cups of sugar and 8 cups of water. How much sugar is used per cup of water?

Answers

Answer:

Im not exactly sure but i think it's 1/4 or 1/5.

Step-by-step explanation:

This was based on my work I did.

Answer: 1 cup

Step-by-step explanation:

you are standing on the middle rung of a ladder.
if you first climb up 3 rung then down 5 rung and then up 10 rung to get onto the top rung how many rung are on the ladder

Answers

Answer:

You are 8 rungs on top of the ladder

Step-by-step explanation:

0 + 3 - 5 + 10 = 8

Cylindrical pipe is 2ft. If the pipe is 20ft long what is its volume

Answers

Answer:

[tex]V=251.32\ ft^3[/tex]

Step-by-step explanation:

The radius of cylindrical pipe, r = 2 ft

Length of the pipe, h = 20 ft

We need to find the volume of the pipe. We know that the volume of the cylinder is given by :

[tex]V=\pi r^2 h\\\\V=\pi \times (2)^2\times 20\\\\=251.32\ ft^3[/tex]

So, the volume of the cylinder is [tex]251.32\ ft^3[/tex].

Could someone help this is hard to me

Answers

Answer:

[tex]\frac{4}{8}[/tex] = [tex]\frac{x-2}{x+3}[/tex] ( set the two triangles proportional to each other)

4(x+3)= 8(x-2) (Do the distributive property)

4x+12=8x-16

-4x= -28

x=7

i need help please ​

Answers

4L-30=70

Step-by-step explanation

perimeter of a rectangle =2(L+W)

assuming length =L

with =L-15

p= 2(L+L-15)

p= 4L-30

p=70

therefore equation of the perimeter =

4L-30=70

Please find the median, mode, range, and the Mean Absolute Deviation for the following
data:
9,-1, 1, 3, 3, 8, 5, 3, -1, 10, 11

Answers

Answer:

The median is the first number the mode is middle number and rage is last number

A total of 40 people made cakes for a bake sale. Each person made 3 cakes. Mrs. Sanchez found that 15% of these cakes were chocolate. How many chocolate cakes were made for the bake sale?

Answers

Answer:

18 of the cakes are chocolate

Step-by-step explanation:

To get a percentage, you multiply by the decimal, which in this case is 0.15. 120 * 0.15 is 18.

POSSIBLE POINTS : 13.33 If a wall has a diagonal beam holding it in place that is 12ft long and the height of the wall is 8ft and the base of the beam on the floor is 7ft from the wall is the wall perpendicular?

Answers

Answer:

Step-by-step explanation:

If the wall is perpendicular, then that means that this is a right triangle. We can find out if it is by using Pythagorean's Theorem and filling in the values for the sides. If the statement is true, then the triangle is right and the wall is perpendicular to the base.

[tex]a^2+b^2=c^2[/tex] and filling in:

[tex]7^2+8^2=12^2[/tex] Let's find out if this is true:

[tex]49+64=144[/tex] Is this true?

113 = 144

Definitely not true. So this is not a right triangle and the wall is not perpendicular to the floor.

Which answer describes the transformation of g(x)=log2(x+3)+1 from the parent function f(x)=log2x ?

Answers

Answer:

g(x) is the function f(x) which is shifted 3 units left and 1 unit up

Step-by-step explanation:

Given

g(x)=log2(x+3)+1andf(x)=log2x

The transformation is

g(x) = f(x + 3) + 1, which indicates thatg(x) is the function f(x) which is shifted 3 units left and 1 unit up

g(x) is the function f(x) which is shifted 3 units left and 1 unit up

If you are given

g(x)=log2(x+3)+1 and f(x)=log2x

Then the transmission is g(x) = f(x + 3) + 1, which indicates that g(x) is the function f(x) which is shifted 3 units left and 1 unit up

Find the measure of the angle indicated. I’ll give BRAINLIEST

Answers

Answer:It should be -46 if im right dont hate if im worng.

Step-by-step explanation:

180°in a triangle. 46+92=138. to find out missing angle it’s 180-138=42. angles on a straight line add up to 180 which the question mark is on. 180-42=138

find the real or imaginary solutions of 125x^3 - 27 = 0​

Answers

Answer:

1.2}3,2

Step-by-step explanation:

What's this? I don't understand

Answers

Answer:

There are two solutions

Step-by-step explanation:

The two equations intersect in two points therefore you willl have two solutions

Answer:

C. two solutions

Step-by-step explanation:

Hope this helped have an amazing day!

Which statements are true about the ordered pair (−1, 5) and the system of equations?
{x+y=4x−y=−6
Select ALL correct answers.
The ordered pair (−1, 5) is a solution to the first equation because it makes the first equation true.

The ordered pair (−1, 5) is a solution to the second equation because it makes the second equation true.

The ordered pair (−1, 5) is a solution to the system because it makes both equations true.

The ordered pair (−1, 5) is not a solution to the system because it makes at least one of the equations false.

Answers

Answer:

you answer would be A,B,D there all the answer u cant just have one also I  just took the test im from k12

Find the dot product of vectors u and v, where |u| = 12, |v| = 7, and the angle between is θ = 55°.
- u · v = 68.81
- u · v = 48.18
- u · v = 10.90
- u · v = 2.87

Answers

Answer:

u · v = 48.18

B on edge 2020

Step-by-step explanation:

Answer:

B on edge

Step-by-step explanation:

the secret number is grater than 75.
it has 9 tens.
it has a 3 in the ones places.​

Answers

Answer:

The secret number is 93.

Can you help me with this?

Answers

Answer:

11

Step-by-step explanation:

apply pythagoras theorem

Answer:

11.2 cm

Step-by-step explanation:

By Pythagoras Theorem:

Length of diagonal

[tex] = \sqrt{ {10}^{2} + {5}^{2} } \\ \\ = \sqrt{100 + 25} \\ \\ = \sqrt{125} \\ \\ = 11.1803399 \\ \\ \approx 11.2 \: cm[/tex]

What should be done to both sides of the equation in order to solve y + 8.5 = 17.2?
Add 8.5.
Subtract 17.2.
O Add 17.2.
Subtract 8.5.

Answers

Answer:

Subtract 8.5

Step-by-step explanation:

To solve the equation, y has to be isolated (only y will be on one side of the equation)

To do this, we have to get rid of the 8.5, so it has to be subtracted from both sides.

So, the correct answer is subtract 8.5

Subtract 8.5 from both sides to solve equation.

What is a expression? What is a mathematical equation?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions.A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

We have the following equation -

y + 8.5 = 17.2

y + 8.5 - 8.5 = 17.2 - 8.5

y = 8.7

Therefore, Subtract 8.5 from both sides to solve equation.

To solve more questions on Equations, Equation Modelling and Expressions visit the link below -

brainly.com/question/14441381

#SPJ2

What number is the opposite of -(-15)?​

Answers

Answer:

what is the opposite of -15

15

what is the opposite of -(-15)

-15

Step-by-step explanation:

(5x²-7)(5x²+7)


Help me

Answers

Answer:

[tex]25 {x}^{4 } - 49[/tex]

I need help please I have to finish this

Answers

Answer:

We want to get y and x such that it satisfices all geometric relations:

3y=87

y=87/3 = 29 degree

Hence y= 29 degree

Two parallel lines tell us that 87=3x such that x=29

Step-by-step explanation:

Help me with this pleaseeeeee

Answers

Answer:

7.8

Step-by-step explanation:

Use Pythogoras Theorem

a²+b²=c²

a²=36

b²=25

a²+b²=61

√61=7.8

hope it helps

Have a nice Day , I would appreciate it if you could mark my answer brainliest

7.8 because if you do it carefully it 7.8

Please help on this question

Answers

Answer: bagles: 200 muffins: 164

Step-by-step explanation:

Which math property is used in the expression below?
5(6 - 4) = 5(6) - 5(4)
Identity
Commutative
Associative
Inverse
Distributive

Answers

Answer:

Distributive

Step-by-step explanation:

Distributive Property

(Pls help) A pie crust recipe calls for 2 cups of butter for each 3 cups of flour. Ella is making enough
crusts to use 9 cups of flour. How many cups of butter will she need?

Answers

.6 cups of flour Step-by-step explanation:

the 7s in 7,700 what is the value of the given digits​

Answers

Answer:

the first 7 has a value of 7,000 while the second 7 has a value of 700

Can someone help me with this problem ?

Answers

The answer is 83. 83+5=88. just subtract it.

Answer:

83

Step-by-step explanation:

You would subtract 5 from 88 to get Anjali's current age which is 83.

This list shows the lengths in feet of the 25 longest bridges in the United States.
1010
1470
1600
2000
2800
1053
1495
1632
2150
3500
1200
1596
1750
2150
3800
1207
1600
1800
2300
4200
1380
1600
1850
2310
4260

Jamie made a frequency table of the bridge data.
U.S. Bridges
Length (ft)
Tally
Frequency
(first interval)
|||| ||
7



(last interval)
||
2
Based on the tallies and frequencies for the first and last intervals, how many intervals of what length did Jamie use?

a.
4 intervals of 1000 feet
c.
6 intervals of 500 feet
b.
5 intervals of 1000 feet
d.
7 intervals of 500 feet

Answers

Answer:

D. 7 intervals of 500 feet

Step-by-step explanation:

Got it right

Jamie used 5 intervals of 1000 feet as per the given data. The correct option is b.

What are tallies and frequencies?

A tally chart is a straightforward method of recording and counting frequencies. Each occurrence is represented by a tally mark, and every fifth tally is drawn diagonally to form a five-pointed star.

The first interval has a frequency of 7, which corresponds to the first 7 data points in the list:

1010

1470

1600

2000

2800

1053

1495

The last interval has a frequency of 2, which corresponds to the last 2 data points in the list:

2310

4260

Since there are 25 data points in total, and the first 7 and last 2 have been accounted for, that leaves 16 data points for the remaining intervals.

If Jamie used 1000-foot intervals, each interval would cover a 1000-foot range. The remaining data points range from 1200 to 4200 feet, so they are divided into 1000-2000, 2000-3000, and 3000-4000 foot intervals.

If Jamie used 500-foot intervals, each interval would cover a 500-foot range.

Thus, because the remaining data points range from 1200 to 4200 feet, they are divided into 1000-1499, 1500-1999, 2000-2499, 2500-2999, 3000-3499, 3500-3999, and 4000-4499 foot intervals.

For more details regarding tallies and frequencies, visit:

https://brainly.com/question/30141580

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image here hard 10th grade math

Answers

No image Imao 1003838474644

the ratio of pens to pencils that are used by Woodlands middle school students is 3 to 2 if their is a total of 160 middle school students how many of them use pencils

Answers

Answer:

Number of students that use pen= 96

Step-by-step explanation:

Giving the following information:

Ratio pens to pencil= 3:2

First, we need to calculate the proportion of pens and pencils in this middle school:

Pens= 3/5= 0.6

Pencil= 2/5= 0.4

Now, we can determine the number of students that uses pens:

Number of students that use pen= 160*0.6

Number of students that use pen= 96

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