Help!!!!!!!!
For which data set is mean the best measure of central tendency?
A: 94, 98, 96, 100, 97
B: 54, 60, 58, 3, 64
C: 26, 29, 71, 28, 71
D: 5, 5, 5, 301, 5
Answers
Answer: C
Step-by-step explanation:
Median is not accurate, and mode isn't either. 26 and 71 are kind of far apart, but not too far, and there are two 71s. This makes the average an accurate representation.
A is best represented by median, since the numbers have such a small range.
B and D each have one number that's an outlier, so the average wouldn't accurately represent it.
Hope this helps!
Related Questions
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
Answers
Can some please help me?
Answers
Answer:
ofc 8374747374743i3i3i383
5. 16t^4/8t^4
9. 6^3+6+4/6^2+3+3
THE ADDITION PART IS STILL EXPONENTS
I hope that was easy to understand, here’s a guide if you need it in the future
use the slope formula to find the slope between the given two point
(5, 3) and (5, -9)
pls show work!
Answers
(-9)-(3)
(5)-(3)
Slope is -6
A 64‐acre coconut farm is arranged in an 8‐by‐8 array. Mika wants to know the average number of coconut palms on each acre. Each cell in the table represents an acre of land. The number in each cell tells how many coconut palms grow on that particular acre.
45 54 40 34 44 66 32 65 66 33 42 36 33 51 50 35 51 45 66 33 47 43 66 61 46 35 48 67 60 59 52 67 46 32 64 35 55 47 61 59 45 48 53 62 55 58 51 41 48 38 47 48 43 34 64 54 53 67 44 59 58 48 62 45
The numbers in green represent Mika's random sample of 10 acres. What is the average number of coconut palms on the randomly selected acres? Round your answer to the nearest tenth. The average number of coconut palms is
A. 44.3
B. 44.30
Answers
Answer:
A. 44.3
Step-by-step explanation:
When rounding to a tenth the second decimal place is removed.
Hey fiddle fiddle the medians the middle
You add and divide for the mean
The mode is the one you so the most
And the range is the difference betweeennnn
I need help with 1 AND b, please explain!
Answers
Multiply -3 with -1
Then multiply it to the 3rd power.
2nd answer is 1 / 1296
First add the expoinents
-12 +8 = -4
Then you would need to do the equation
6^-4 x 6^0
And this would equal 1/1296
Please mark Brainliest :)
Answer:
First is 27 the 2nd is 1 / 1296
Step-by-step explanation:
What is the output value for the following function if the input value is 1?
y = 3 x + 1
5
32
0
4
Answers
Explanation: 3 times 1 is 3 so 3 plus 1 is 4. Y=4
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
The diameter of a hat is 6.8 inches. What is the distance around the hat using π = 3.14? Round to the hundredths place.
2.17 inches
10.68 inches
21.35 inches
36.29 inches
Answers
d = 6.8 in
π (in this problem) = 3.14
Keep the formula in mind: C = 2πr
We have d, but no r. However, we know that r = 1/2d, or the radius is half the diameter.
Then again, it’s 2πr, or 2rπ, ORRRRR dπ.
So 6.8(3.14) = 21.352.
The choices only go in 2 decimal places so round.
Your answer is the 3rd choice: 21.35 in.
The required distance around the hat is approximately 21.35 inches. Option C is correct.
What is the circumference of the circle?To find the circumference of a circle, we use the formula C = πd, where C is the circumference, π is the mathematical constant pi (approximately equal to 3.14), and d is the diameter of the circle.
Here,
The distance around a circle is given by the formula circumference = π × diameter.
Substituting the given values, we get:
circumference = 3.14 × 6.8
circumference = 21.352
Rounding to the nearest hundredth, we get:
circumference ≈ 21.35 inches
Therefore, the distance around the hat is approximately 21.35 inches.
Learn more about circumference here:
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Can someone pls help me with this first right answer gets brainlist
Answers
116.
you add the m<1 and the m<3 and make them equal to 180. the value of x can then be substituted into the m<3 making the answer 116.
What the LCM of 1/30 and 11/20?
Plz help :)
Answers
Answer:
11/ 20 is the awnser
Step-by-step explanation:
!!SHOW WORK!! The track team is selling plush toy tigers for a fundraiser. which toy has the lowest cost per tiger.
company A 12 tigers for 33.24
company b 16 tigers for 44.80
company c 15 tigers for 41.10
Answers
Answer: c
Step-by-step explanation:
33.24 / 12 = 2.77
44.80 / 16 = 2.80
41.10 / 15 = 2.74
(/ means divide)
Answer:
Company C has the lowest cost per tiger.
Step-by-step explanation:
1. Divide the cost by the amount of toys.
-The cost for one tiger in Company A is 2.77 (33.24 ÷ 12 = 2.77)
-The cost for one tiger in Company B is 2.8 (44.80 ÷ 16 = 2.8)
-The cost for one tiger in Company C is 2.74 (41.10 ÷ 15 = 2.74)
2. Compare the quotients of all the companies.
Once you compare the costs, you will see that Company C has the lowest cost per tiger.
Write an equation for each word problem. Then solve.
1. Konrad has $57 in his change jar and adds $3 each week. In how many weeks will the change jar have more than $72?
2. Omar needs at least $2,150 to buy a used car. He already has $1,800 saved in his bank account. If Omar saves an additional $35 a week, in how many weeks will he have saved enough to buy his car?
Answers
1.
Let w be the number of weeks it takes for Konrad to have more than $72.
The equation we can derive is 57 + 3w > 72.
Then solve:
57 + 3w > 72
3w > 15
w > 5
Then w must be 6, which is the next number greater than 5.
2.
Let w be the number of weeks it takes Omar to have enough money for the car.
The equation we can derive is 1800 + 35w \(\geq\) 2150.
Then solve:
1800 + 35w \(\geq\) 2150
35w \(\geq\) 350
w \(\geq\) 10
Then w must be 10.
2:(2,150-1,800)/35=10 those are the answers
Joan wrote a linear function.
Tell whether each statement about a linear function is true or false.
Answers
Answer: look up true or false for the last answer but other than that th answer should be true
Step-by-step explanation:
7th grade math I'll give brainliest
Answers
Answer:
Step-by-step explanation:
Rise over run is the slope, m
m=2/5
a) the slope is 2/5 = .4 which is below the boundary guideline. So no this is not with in carpenter's guidelines
b) the image below show a line with slope 2/5 but with intercept 3
c) the stairs can be draw on the line with rise 2 run 5 from the line. see image
d)equation is in image
2.
a) count the squares
horizontal distance =3
vertical distance =3
b) slope is vertical distance over horizontal distance so m= 3/3 =1
you charge 5.00 dollars to wash cars to wax cars you charge an extra 2.00 dollar a minute you earned 37 dollars how long did you wax the car for
Answers
Answer:
You waxed the car for 16 minutes
Step-by-step explanation:
The equation is t=2m+5. T is the total time and m is the number of minutes you charge extra. There for (37)=2m+5. 32=2m. m=16. Total number of minutes waxed is 16 minutes
37divided by 2=16
PLEASE HELP WILL MARK BRAINLIEST!!
Answers
what is 12x – 20 – 5(x – 3)?
Answers
Answer:
ddddddddddddc daf a reag ehh fdsh
Step-by-step explanation:
Answer: =7x−5
Step-by-step explanation: Hope this help :D
Let's simplify step-by-step.
12x−20−5(x−3)
Distribute:
=12x+−20+(−5)(x)+(−5)(−3)
=12x+−20+−5x+15
Combine Like Terms:
=12x+−20+−5x+15
=(12x+−5x)+(−20+15)
=7x+−5
I need help, please quickly
Answers
Answer: The ratio is 18:3
Step-by-step explanation:
Answer: 6 to 1
Step-by-step explanation:
A ratio refers to a fraction. In this case the question asks how many players to coaches there are.
The word "to" means that is where the fraction bar goes.
Players/Coaches
There are 18 players and 3 coaches.
18/3
18 can be divided by 3, 6 times so the fraction can be simplified to
6/1 meaning there are 6 players for every coach.
Find the length of the third side. If necessary, round to the nearest tenth.
Answers
5. Why is it difficult to estimate 1% as a fraction with a
denominator that is less than 25?
Answers
Earn points, answer both questions!
Answers
Answer:
Area of five squares = 1289.09 square units
Perimeter = 194.6 units
Step-by-step explanation:
Area of square and perimeter:
First find the length of each square, then find the area of each square.
To find the area of five squares, add all the area of each square.
Side of square1 = 27 units
\(\sf Side \ of \ square2 = \dfrac{2}{3}*27=2*9 = 18 \ units\\\\Side \ of\ square3= \dfrac{2}{3}*18=2*6=12 \ units\\\\Side \ of \ square4=\dfrac{2}{3}*12=2*4=8 \ units\\\\Side \ of \ square5=\dfrac{2}{3}*8=\dfrac{16}{3}=5.3 \ units\)
Area of square1 = 27*27 = 729 square units
Area of square2 = 18*18 = 324 square units
Area of square3 = 12*12 = 144 square units
Area of square4 = 8*8 = 64 square units
Area of square5 = 5.3*5.3 = 28.09 square units
Area of five squares = 729 + 324 + 144 + 64 +28.09
= 1289.09 square units
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Perimeter of the composite figure = (27 + 27+27+9) + (18+18+6) +(12+12+4) + (8+8+2.7)+ (5.3+5.3+5.3)
= 90 + 42 + 28 + 18.7 + 15.9
= 194.6 units
the perimeter is 194.6 units
help please and thanks! mathematics.
Answers
Answer:
27 cm squared
Step-by-step explanation:
r = half of the diameter = 8 cm
area of circle = pi(r)^2 = 3.14 x (8 cm)^2 = 200.96 cm squared
area of rectangle = 16 cm x 8 cm = 128 cm squared
area of shaded region = area of the rectangle - (half of the area of the circle)
half of the area of the circle = 100.48 cm squared
therefore, area of shaded region = 128 cm squared - 100.48 cm squared
= 27.52 cm squared
I need some help on this problem.
Answers
Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Answers
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation:
Which of the following equations best represents the relationship between x and y?
Answers
You get this answer because of the slope rule rise over run. In this case we are given a negative slope (the slope goes downward) which means the drop/run the drop would be two and the run would be 1 and -2/1 is -2.
The equations which is best represents the relationship between x and y is,
⇒ y = - 2x
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Two points on the graph of the line are (0, 0) and (- 1, 2).
Now,
Since, The equation of line passes through the points (0, 0) and (- 1, 2).
So, We need to find the slope of the line.
Hence, Slope of the line is,
m = (y₂ - y₁) / (x₂ - x₁)
m = (2 - 0) / (- 1 - 0)
m = 2 / - 1
m = - 2
Thus, The equation of line with slope - 2 is,
⇒ y - 0 = - 2 (x - 0)
⇒ y = - 2x
Therefore, The equation of line passes through the points (0, 0) and
(- 1, 2) will be;
⇒ y = - 2x
Learn more about the equation of line visit:
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can someone do this?
Answers
Answer:
A. $3.56
Step-by-step explanation:
PLEASE HELP ASAP WILL MARK BRAINLIEST!!
!!
Answers
Answer:
The first one
Step-by-step explanation:
Write 7^3 x 7^2 using a singular exponent.
Answers
Answer:
7^5
Step-by-step explanation:
The base number (7) is the same, so we can just add the exponents together.
Hope that helped!
To write 7^3 x 7^2 using a singular exponent, you can add the exponents together since the bases (7) are the same. The result is:
7^3 x 7^2 = 7^(3 + 2) = 7^5\(\huge{\mathcal{\colorbox{black}{\textcolor{lime}{\textsf{I hope this helps !}}}}}\)
♥️ \(\large{\textcolor{red}{\underline{\texttt{SUMIT ROY (:}}}}\)
how many gallons of a 25% acid solution should be added to a 12% acid solutions to obtain a 20% acid solution? pls answer quickly <3
Answers
Answer: 2 gallons
Step-by-step explanation: