Mathematics Middle School

Which of these statements best describes a biased sample?

A. it is very small.
B. It is not randomly chosen.
C. It results in incorrect predictions.
D. It does not accurately represent the population.

Answers

Answer 1

Answer:

i think it is B

Step-by-step explanation:

bias means you have an opinion on something and you make choices on it so a biased sample would not randomly chosen

Answer 2

The correct option is:

D.) It does not accurately represent the population.

What is sampling?

In statistical analysis, sampling is the procedure by which researchers select a specific number of observations from a larger population. The sample strategy will depend on the sort of study being done, although it may involve systematic sampling or just plain random sampling.

It is a common statistics practice, when we want to study something from a population, we find a sample, which is a group of members of this population. The sample has to be representative of the population, that is, it has to involve all of its groups. If it does not involve all the groups, it is not an accurate representation of the population, and is called biased.

Hence, option C is correct.

To learn more about sampling:

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Related Questions

I need help Ill give brainlyiest

Answers

1: 1
2: 1
3: 5
4: -8
5: 1
6: 1
7: 3
8: 10

WILL GIVE BRAINLIST!
Which set of ordered pairs shows a functional relationship?

Answers

Answer:

C

Step-by-step explanation:

It is D not x value repeats

Can you please help me ASAP thxs.

Answers

Answer:

32in= 2ft  8in

77in=2yds 5in

144in=4 yd

3 yards=9ft

Step-by-step explanation:

4 yards=4×36=144in

9ft=9×12=108in

3yards=3×36=108in

2ft 8in=24+8=32in

2yards 5in=72+5=77in

hope it helps

have a great day!!

32in = 2 feet and 8 inches, 144 inches = 4 yards, 3 yards= 9 feet, 77 inches= 2 yards 5 inches.

Maya uses blue and orange fabric to make identical wall decorations. The graph below shows the relationship between the amounts of blue and orange fabrics used.

Answers

Answer: 3/7

Step-by-step explanation:

im not sure but i thinks its 3/7

Please help it’s due today!

Answers

Answer:

Length = 2

Width = 2

Height = 6

Step-by-step explanation:

2 * 6 * 2 = 24

2*6*2 = 24 is the answer:)

Pls help me
Questios in Picture
Only need help with 1, 2, 3, and part b of 4

Answers

Answer:

(2,4) (-5,5) (3,4)

Step-by-step explanation:

( had taken the test

which integer is greater, least, or are they equal
0 , -1

Answers

Least!!! Hope this helped
0 is greater -1 is least

a skydiver jumps out from the plane at 10,000 feet above the ground. the skydiver decends at a rate of 175 feet per seconds. how high in the air is the skydiver when he opens his parachute after 25 seconds?

Answers

Answer:

5625 feet

I hope it's helps you

Answer:

5625 feets

Step-by-step explanation:

Rate(feet/seconds) = height(feets)/time(seconds)

175 = x/25

x = 4375

After the skydiver opens his parachute the height reduces

Initial height – reduced height

10000 – 4375

= 5625 feets

Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

ummmmmmmmmmmmmmmmmmmmmmm hi

Step-by-step explanation:

D= - 6/4. F= - 6/2. E= - 1/3

PLZ HELP PLEASE SOLVE THESE AND SHOW UR WORK!!! I NEED U TO SHOW UR WORK PLZ IM BEGGING

Answers

Answer:

First one, 2.88-2.4 since 12% of 24 is 2.88 (For music) and 10% of 24 is 2.4(playing tennis) which is 0.48 hours. Second, Jazz and Opera because 40% of 55 is 22. and together, they add up to 22. PLS BRAINLIEST PLS PLS PLS PLS PLS

Step-by-step explanation:

I only got the second one but I think it is Country jazz and rock

A spinner has 4 colors: red, green, pink, and blue. What is the probability of spinning pink and tossing tails on a coin?

P (Pink, tails) = ?

Answers

Answer: The probability of landing on pink has a 25% chance and flipping a coin to land on tails has a 50% chance

Step-by-step explanation:

100 ÷ 4 = 25

100 ÷ 2 = 50

Answer:

1/8

for pink and tails

Step-by-step explanation:

:)

math.

Please help. Thank you so much

Answers

Answer:

Average decrease in value per year: $70

Step-by-step explanation:

600 ---> 250

600 - 250 = 350

350 / 5 = 70

I need an right answer ASAP

Answers

The mean for Serena’s time is 8 hours.

You add 6+11+10+8+5= 40

40/5 = 8

hope this helps <3
the mean is 8 to serena’s data set

Helppp ill mark brainliest
look at the picture

Answers

Answer:

She will have to earn $3,100

Step-by-step explanation:

6,600-3,500=3,100

3,100

You add up what she is getting and than subtract how much she needs with what she has so far. And that’s the answer. So 2000+ 1500= 3500 than 6,600-3500

The temperature in Salt Lake City was -10.6°C. Which absolute value equation best describes how many degrees the temperature was below 0°C?

A) |-10.6| = -10.6
B) |-10.6| = -10
C) |-10.6| = 10
D) |-10.6| = 10.6

I have a feeling that it’s D but at the same time, A...

Answers

It is A.



Because the absolute value is -10.6c

The absolute value equation best describes how many degrees the temperature was below 0°C is 10.6.

What is absolute value or modulus ?

The absolute value of a number refers to the distance of a number from the origin of a number line. The absolute value of any integer, whether positive or negative, will be the real numbers, regardless of which sign it has.

For example: 5 is the absolute value for both 5 and -5.

According to the question,

The temperature in Salt Lake City was -10.6°C.

Then, absolute value equation best describes how many degrees the temperature was below 0°C =

⇒ Absolute value = modulus value

                             =  |-10.6|

                             = 10.6

Hence the absolute value = 10.6

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36 POINTS!
Please answer ALL questions! I really need to get this done. Thank you so much if you do. <3

Answers

Answer:

20.40*0.87=24.7080

what is 40%of 9040/100*90=36That I was able to see

Answer:

I'll try answering as much as I could and can see :)

Step-by-step explanation:

1) 6/11 ÷ 2/5 = 15/11 or 1.3636... or 1 4/11 as a mixed number.

2) 8,299 ÷ 43 = 193

3) 28.40 x 0.87 = 24.708

4) 3,948.99 + 489.08 = 4438.07

5) What is 40% of 90 = 36

6) Greg kicked the soccer ball 75 feet. How many yards did he kick the ball? 25 yards

7) Write an expression that represents 72 divided by n plus 4? 72/n+4

8) How many feet are in 3 miles? 15840

hey this is all I can do and see but I hope this helps. p.s. I really need brainliest :)

Help please show work too

Answers

Answer:

B

Step-by-step explanation:

I am not sure what your teacher wants but I guess you can say the following:

at n = 1, the cost is 4 dollars.

at n = 2, the cost is 8 dollars.

This trend is the same where the cost increases by 4 as n increases by 1. This means the C = 4n. We can check this by plugging values into the equation.

For the first row, C = 4, n = 1, and so the equation satisfies it. For the second row in the table, C = 8, n = 2, and so the equation works again. The other data points also agree using the equation.    

The answers B. I’m not quite sure how to show work but that’s what I know that it’s correct.

What is 2x - 4x = 1 as a fraction



NO LINKS

Answers

2x-4x=1
Collect like terms

-2x=1
Divide both sides of the equation by -2

X= -1/2

Answer:

-1/2

Step-by-step explanation:

2x-4x=1

-2x=1

/-2    /-2

x= -1/2

Which of the equations below represents a direct variation equation? (Which equation is proportional?) *
A) y = 1.6x
B) y = \pi x^(2)
C) y = x + 6

Answers

Answer:

A

Step-by-step explanation:

becuz it's of the form y = kx

Answer:

A.

Step-by-step explanation:

y = 1.6x is direct variation

solve 2x+x-3 will mark brainliest

Answers

Answer:

3x−3

Step-by-step explanation:

2x+x−3

=2x+x+−3

Combine Like Terms:

=2x+x+−3

=(2x+x)+(−3)

=3x+−3

3x-3 hope this helps

hehe hoi answer this for pog points

Answers

Answer:

D 7 degress is x

Step-by-step explanation:

Calculate the area of each figure below.
PLS BE SPECIFIC ON WHICH ONES YOU HAVE ANSWERED

Answers

Answer:

1)88 2)44.5

Step-by-step explanation:

i'm not sure about 3 and 4

Answer:

1.) 88cm²

2.) 44.5cm²

3.) 141.37cm²

4.) 44cm²

Step-by-step explanation:

Alrighty, we're just going to do an abridged version, but if you need me to explain it more, I can:

1.) 6 x 8 ÷ 2 = 24

8 x 8 = 64

64 + 24 = 88

1.) 88cm²

2.) 2 + 2 + 3 = 7

7 x 5 ÷ 2 = 17.5

9 x 3 = 27

27 + 17.5 = 44.5

2.) 44.5cm²

3.) 3.14 x 3² = 28.27

3.14 x 6² = 113.1

28.27 + 113.1 = 141.37

3.) 141.37cm²

4.) 3.14 x 4² ÷ 2 = 25.135

4 x 2 = 8

8 x 9 ÷ 2 = 36

8 + 36 = 44

4.) 44cm²

if any of these are wrong, let me know

hope this helps:)

Sue saved $360. She spent 75% of her savings. How much does she have left

Answers

Answer:

Step-by-step explanation:

Expense = 75%

Percentage of amount left = (100 -75)% = 25%

25% of 360 = 0.25* 360 = 90

Remaining amount left with Sue = $ 90

She would only have 25% remaining so 25% times 360 is $90

what is the relative frequency of students that are on the honor roll worh a job to the total number of students on honor roll

(Don’t put “click this file for the answer” and DONT put i don’t know or something like that or I will report)

Answers

48/73 Because the total of students on honor roll are 73 (posible outcomes) but 48 of them are doing jobs (favorable outcomes) so I think it is 48/73

To the nearest hundredth, what is the surface area that will be painted?

Answers

Answer:

6.5in

Step-by-step explanation:

find the area of the shaded regions

fine the surface area of the square

A = 2×2

A = 4

find the area of the triangle

A = 1/2bh

A = 1/2×2×2.5

A = 2.5

add the areas

2.5+4 = 6.5

this is easy, 6.5 in

Help me please with these

Answers

Answer:

d

Step-by-step explanation:

HELP!!! ALGREBRA!!! THANK YOU!

Answers

Answer: B

Step-by-step explanation:

The following system of equations is graphed below.
Y= 3x - 9
Y= -2x + 1

What is the solution to the system?
A.
(−3, −2)

B.
(−3, 2)

C.
(−2, −3)

D.
(2, −3)

Answers

-3, -2 because that is where the points meet
the answer is D because the points meet at (2,-3)

<-- 50 points No Trolls please

Answers

Answer:

the correct answer is 1 because it looks like they are doing it by odd numbers.

hope this helps :)

Step-by-step explanation:

The answer would be a.

What is the area of the figure below?

The figure is shown. and plz give me a truthful answer i need this

Answers

Answer:

86 cm²

Step-by-step explanation:

Answer attached...

Hope it helps ^_^

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