Helen practiced the piano 5 days last week. The list below shows the number of minutes she practiced each day: 20,25,30,20,30 What is the MAD (mean absolute deviation) in Helen's practice times?

Answers

Answer 1

Answer:

4

Step-by-step explanation:

Given the data:

X : 20,25,30,20,30

Mean absolute deviation :

Σ(x - xbar) / n

n = sample size = 5

xbar = ΣX / n = (20+25+30+20+30) /5

xbar = 25

((20-25) + (25-25) + (30-25) + (20-25) + (30-25)) / 5

We take the absolute values, hence, negative signs are ignored :

(5 + 0 + 5 + 5 + 5) / 5

20 / 5

= 4


Related Questions

5 athletes are in a 100k race. How many different ways can they finish based on their order.

Answers

Answer:

It's 120 different ways I think

Step-by-step explanation:

A survey was conducted at a town hall meeting to determine if a new park should be built. Out of the 3,462 people surveyed, 1,468 people voted that the town should not build a new park.

Assuming the survey was random, what percentage of people in the town would likely vote in favor of the new park?

Enter your answer to the nearest percent in the box.

%

Answers

Answer: 58%

Step-by-step explanation:

Answer:

58%

Step-by-step explanation:

If 1468 weren't in favor of the new park, then 3462-1468=1996 people were in favor of the new park. This means the percentage of those who are in favor of the park is 1996/3462=0.5765=57.65%=58%

[tex]\sqrt{12} +9\sqrt{3\\}[/tex]

Answers

Answer:

11 square root of 3 is the answer

Explanation:
11 square foot is the answer

Julie is playing a game where she must flip 3 coins. If Julie flips all 3 coins and gets heads all three times, she wins. If Julie does not get heads all three times, she loses.

1/8


1/2


1/4

Answers

Answer:

1/8

Step-by-step explanation:

[tex](\frac{1}{2})^{3}[/tex]

PLEASE I NEED THE ANSWER IN THE NEXT MINUTE

Answers

Answer:

Step-by-step explanation:

A

Answer:

96

Step-by-step explanation:

:)

Ms. Powell bought 12 cookies for $4.00 and Ms. Malley bought 8
cookies for $3.50. How much did each person pay for a cookie? And who
had the better deal?

Answers

Answer:

Ms. Powell paid around 33 cents for each cookie

Ms. Malley paid around 43 cents for each cookie

Ms. Powell had the better deal

Step-by-step explanation:

Divide the amount paid with the amount of cookies bought so 4 ÷ 12 = 0.3333... and 3.50 ÷ 0.4375...

I hope this helped!

1) Approximately ¢33 per cookie

2) Approximately ¢29 per cookie

Ms. Powell had a better deal

In ΔTUV, the measure of ∠V=90°, UV = 3.3 feet, and TU = 9.8 feet. Find the measure of ∠U to the nearest degree.

Answers

Answer:

19.7°

Step-by-step explanation:

In ΔTUV, the measure of ∠V=90°, UV = 3.3 feet, and TU = 9.8 feet. Find the measure of ∠U to the nearest degree.

We make use of sine rule

TU/sin V = UV/sin U

9.8/sin 90 = 3.3/sin U

Cross Multiply

sin 90 × 3.3 = 9.8 × sin U

sin U = sin 90 × 3.3 /9.8

U = arc sin ( sin 90 × 3.3/9.8)

U = 19.7°

On a number line 8.29 would be located..... choose all answers that make the statement true

A)between 8 and 9
B) between 8.2 and 8.3
C) to the right of 8.39
D) between 8.28 and 8.30

Answers

A, B, and D I believe:)

Answer:

B and D

Step-by-step explanation:

D is being more detailed then A

Plot five parabolas, one through each set of color coordinated points.

Answers

Answer:

red = y=(x+5)/4 -1

Step-by-step explanation:

https://www.emathhelp.net/calculators/algebra-2/parabola-calculator/?ft=vp&vx=-5&vy=-1&px=-7&py=0&ppdir=x

use this very good calculator

What is the median of the following numbers: 9, 10, 4, 6, 3, 7, 8, 2, 5. 54 8 7 6

Answers

The median of the numbers would be 7.5

Arnetta’s monthly gross pay is $4,200 federal withholding is 16.05%

Answers

Answer: $3204.06

Step-by-step explanation:

Here's the complete question:

Arnetta's monthly gross pay is $4,200. Federal withholding is 16.05% of her pay. Her other deductions total $321.30. Find her net pay.

First, we calculate the Federal witholding which will be:

= 16.05% × $4200

= 0.1605 × $4200

= $674.10

The total deduction will now be:

= $674.10 + $321.30

= $995.40

The net pay will now be:

= Gross pay - Total deductions

= $4,200 - $995.40

= $3204.06

Therefore, Arnetta’s net pay is $3204.06

Please need help, will give brainlist

Answers

C and E are correct! I hope this helps!

smallest number to be subtracted from 32 to make it a perfect cube​

Answers

Answer:

2

Step-by-step explanation:

Answer:

2 is the smallest number

Hey guys, could someone please help me answer question 3 (use the graph) ASAP and also I would like the working out~
thxx✨

Answers

Answer:

B. 5.6%

Step-by-step explanation:

Add all the visitors up which equals 4215.5 and do 236.9 divided by 4215.5 and you get 0.056 which converted to a percentage equals 5.6%. Hope this helps.

HELPPPPPPPPPPPPPPPPPPP

Answers

Answer:

-31

Step-by-step explanation:

8 - ( -5 * - 3 - 1) ÷ 2 - (6)² + 4

8 - (15 - 1) ÷ 2 - 36 + 4

8 - (14) ÷ 2 - 36 + 4

8 - 7 - 36 +4

1 - 36 + 4

-35 + 4 = -31

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Which equation has no real solutions?
A. B^2+3b=-3
B.2c^22+4c = 9
C. 5c^2 - C= -2
D. 7g +1+3g^2= 0

Answers

Answer:D

Step-by-step explanation:

NEED HELPPPPPPPPP ASAP

Answers

Can you please explain what I should do? I’m confused by the assignment sorry

Answer:

Tank A

Step-by-step explanation:

add it all up

4+8+12+16+20 = 60        5+10+15+20+25 = 75

60/75  =  4/5 = 0.8

2+4+6+8+10  = 30           3+6+9+12+15  =  45

30/45 = 2/3  = 0.667

0.8 is more than 0.667

Tank A has more fish.

Reduce each of the following fractions to its simplest form. a. 12⁄18 b. 48⁄54 c. 27⁄90 d. 63⁄77 e. 24⁄32 f. 73⁄365

Answers

Answer: A. 2/3 B. 8/9 C. 3/10 D. 9/11 E. 3/4 F. 1/5

Step-by-step explanation:

please help me out, i need it right now please.

Answers

The answer is B hopes this helps

median of 22, 16, 14, 26, 32, 30​

Answers

Answer:

15

Step-by-step explanation:

cancel out from the sides till you have 1 number in the middle but in this case we have 2 numbers.

in a case like that you add both numbers and divide by 2 to get your answer

so 16+14÷2= 15

Median is the middle

Since there is an equal amount of numbers,6, you would need to take the average of the two numbers in the middle.

REMEMBER: always put it in ascending order first (0-10)

14, 16, 22, 26, 30, 32

Middle numbers are: 22 and 26

Take average: (22+26)/2 = 24

Therefore the median of this sequence is 24.

A school survey found that 7 out of 30 students walk to
school. If two students are selected at random without
replacement, what is the probability that both students
walk to school?
49/90

49/900

7/30

7/145

Answers

Answer: 7/145

Step-by-step explanation:

The probability that the first student walks to school will be: = 7/30.

The probability of selecting the second student that walks to school will be: = 6/29.

Then we multiply both together and this will be:

= 7/30 × 6/29

= 7/145

please help, will give brainliest if right!

Answers

Answer:

a

Step-by-step explanation:

Need help finding the length of AC

Answers

Answer:

I would have to say that the length of AC is 22.5

Miguel went shopping for a new phone. The sales tax where he lives is 4%. What number should he multiply the price of the phone by to find the total plus tax in one step?

Answers

Answer:

A 0.4 as the tax percent.

Step-by-step explanation:

Cos=?

Help help help

Answers

Answer:

The answer is C. 35/37

Step-by-step explanation:

We know that cos Θ = adjacent/ hypotenuse

so the answer is 35/37.

Answer:

it's I believe it's (A) 12 / 37

Factorize: ay - y - a + 1.


Answers

Answer:

I think the answer (A-1)(y-1)

jordan has 10 ties, 3 suits, 5 belts, 8 shirts, and 4 pairs of shoes that he chooses from daily. How many different outfits can he put together?

Answers

Answer:

we can get 2 full outfits

HOPE IT HELPED

HELP , TIMES ALMOST UP!!!!!!

Answers

Answer:

0.8660254 or √3/2

Step-by-step explanation:

Answer:

√3/2

Hope this helps

What is the slope of the line that passes through the line
containing (-6, 1) and (4, 8)?

Answers

The slope is m=7/10


I hope it helps :)

Traveling 315 feet in seven minutes. Traveling per minute? how far would it be in 10 minutes?

Answers

Answer:

45 per minute. 450 in 10 minutes.

Step-by-step explanation:

Distance/ Time

315/ 7 = 45

Unit rate x how far you need to go

45 x 10 = 450

Answer:

450 ft

Step-by-step explanation:

315/7 =  45 (eveyr minute 45 ft)

10x45 = 450

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