1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mash [69]
3 years ago
13

PLEASE HELP!! What is the standard deviation of a data set whose values are all the same?

Mathematics
2 answers:
amm18123 years ago
7 0

Recall that the formula for standard deviation of a sample is:
s
=
√
∑
n
i
=
1
(
x
i
−
¯
x
)
2
n
−
1
DaniilM [7]3 years ago
5 0

Answer:

zero

Step-by-step explanation:

You might be interested in
Below are the data collected from two random samples of 500 American students on the number of hours they spend in school per da
balu736 [363]

Answer: <em>Tara thinks correctly.</em>

Step-by-step explanation:

<em>Let's calculate the average value in sample A:</em>

<em>(4 × 70 + 5 × 100 + 6 × 125 + 7 × 135 + 8 × 70) ÷ 500 = 6,07 ≈ </em><em>6 hours</em>

<em>Let's calculate the average value in sample B:</em>

<em>(4 × 80 + 5 × 90 + 6 × 120 + 7 × 125 + 8 × 85) ÷ 500 = 6,09 ≈ </em><em>6 hours</em>

<em>So, Tara is correct in saying that the mean is 6.</em>

3 0
3 years ago
Inverse function of y = -2x3+1
Ymorist [56]
The answer to your question is y=-5
6 0
2 years ago
Please help i don't even where to start<br><br>solve for x​
aliina [53]

The radius is 10, so the diameter is 20. This means the parts of the diameter (the chord through the center P) to the left and right of the vertical chord have lengths 16 and 4, respectively.

Because the horizontal chord is a diameter, the vertical chord is cut in half, so its parts above and below the diameter both have length <em>x</em>.

Now, by the intersecting chord theorem,

16×4 = <em>x</em> × <em>x</em>

or

<em>x</em> ² = 64

so that

<em>x</em> = 8

6 0
3 years ago
1)-11 + __ = 15<br> I really need help
katrin [286]

Answer:

26

Step-by-step explanation: You basically add 11 them you are at 0 then add 15 to that number and you get 11+15=26 thats ur answer

6 0
2 years ago
Read 2 more answers
Given:• PQRS is a rectangle.• mZ1 = 50°Р21SRWhat is mZ2?130°85°70°65°
Over [174]

To answer this question, we need to recall that: "the diagonals of a rectangle bisect each other"

Thus, if we assign the point of intersection of the two diagonals in the rectangle as point O, we can say that the triangle OQR is an "isosceles triangle". Note that this is because the lengths OR and OQ are equal since we know that: "the diagonals of a rectangle bisect each other". See the below diagram for clarity.

Now, we have to recall that:

- the base angles of any isosceles triangle are equal. This is a fact, and this means that the angles

- also the sum of all the angles in any triangle is 180 degrees

Now, considering the isosceles triangle OQR, we have that:

\angle OQR+\angle ORQ+\angle ROQ=180^o

Now, since the figure already shows that angle m\angle2+\angle ORQ+50^o=180^oNow, since we have established that the base angles m\angle2+m\angle2+50^o=180^owe can now solve the above equation for m<2 as follows:

\begin{gathered} m\angle2+m\angle2+50^o=180^o \\ \Rightarrow2m\angle2+50^o=180^o \\ \Rightarrow2m\angle2=180^o-50^o \\ \Rightarrow2m\angle2=130^o \\ \Rightarrow m\angle2=\frac{130^o}{2}=65^o \end{gathered}

Therefore, the correct answer is: option D

7 0
1 year ago
Other questions:
  • Explain why a number that is divided by a multiple of 3 is also divisible by 3
    5·1 answer
  • Use your ruler and protractor to draw a triangle with one side 9 cm long and an adjacent angle measuring 45 degrees. Explain you
    9·1 answer
  • Order of operations
    15·2 answers
  • An economy package of cups has 200 green cups. If the green cups are 10% of the total package, how many cups are in the package?
    13·1 answer
  • What is the approximate solution to the equation 3t=29 ? 0.3263 3.0650 3.3672 9.6667
    11·2 answers
  • Please help asap <br> What is 9 5/9 simplified
    10·2 answers
  • What is the median? 15 22 16 14 12 18 20 15 20 21
    8·2 answers
  • Please help, I will give brainliest. I am struggling badly.
    6·1 answer
  • The difference of a positive integer and an integer that is greater than it
    13·1 answer
  • 18. If 5x (14-x) = 0, then what does x equal?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!