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
GarryVolchara [31]
3 years ago
11

If each data is increased by a constant K then find it's mean ?? answer fast pleaseeeeeeeeeee​

Mathematics
1 answer:
MArishka [77]3 years ago
6 0

Answer:

The mean is also increased by the constant k.

Step-by-step explanation:

Suppose that we have the set of N elements

{x₁, x₂, x₃, ..., xₙ}

The mean of this set is:

M = (x₁ + x₂ + x₃ + ... + xₙ)/N

Now if we increase each element of our set by a constant K, then our new set is:

{ (x₁ + k), (x₂ + k), ..., (xₙ + k)}

The mean of this set is:

M' = ( (x₁ + k) + (x₂ + k) + ... + (xₙ + k))/N

M' = (x₁ + x₂ + ... + xₙ + N*k)/N

We can rewrite this as:

M' = (x₁ + x₂ + ... + xₙ)/N + (k*N)/N

and  (x₁ + x₂ + ... + xₙ)/N was the original mean, then:

M' = M + (k*N)/N

M' = M + k

Then if we increase all the elements by a constant k, the mean is also increased by the same constant k.

You might be interested in
Find the inverse of the equation y=2/3x-6
Korolek [52]

Answer:1/y =(3x-6)/2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Translate the following phrase: Tom can spend no more than 20 dollars on his mom's birthday present. a) t>20 b) t<20 c) 20
tiny-mole [99]

Answer:

get help by a tutor

Step-by-step explanation:

5 0
3 years ago
What are the solutions of 2x2 + 3x = -5
Daniel [21]
2x^2 + 3x = -5\\2x^2 + 3x +5=0\\ \Delta=3^2-4\cdot2\cdot5=9-40=-31\\\\\Delta
7 0
3 years ago
Read 2 more answers
The city of Anville is currently home to 16000 people, and the population has been growing at a continuous rate of 4% per year.
Nesterboy [21]

Answer

After 13.15 years the population of both towns will become equal.

Step-by-step explanation:

Population of the city Anville is given by using the compound interest formula  

The formula of compound interest

A = p( 1+r/n)^n*t

using this we get

P1 = 16000 (1 +\frac{0.04}{1}) ^1*t

Population of the city of Brinker will be

P2 = 11000( 1  + \frac{0.07}{1}) ^1*t

now to make equal population in both towns

P1=P2

16000 (1 +\frac{0.04}{1}) ^1*t = 11000( 1  + \frac{0.07}{1}) ^1*t

(\frac{1.04}{1.07} )^t = \frac{11}{16}

t = 13.15 years

5 0
3 years ago
Which sentence best contrasts Greg’s father and Lemon Brown, in "The Treasure of Lemon Brown”? Lemon Brown has shown a deep conc
Vika [28.1K]

Answer:

the correct answer will be B i took the test and got a 100%

Step-by-step explanation:

B. Lemon Brown has lived a more exciting life of a musician, while Greg’s father lives a more stable existence as a postal worker.

6 0
2 years ago
Other questions:
  • Rick shared his bag of grapes with his friends. He gave 2/10 of the bag to Melissa and 4/10 of the bag to Ryan. What fraction of
    7·1 answer
  • What dose 0.022222222 equale in a fration?
    9·1 answer
  • Consider the circle graph below of the type of flowers planted in a garden.
    14·1 answer
  • For one History test, Keith had to answer 40 questions. Of these 40 questions, Keith answered 28 of them correctly. What percent
    13·1 answer
  • What is the solution to the equation 9^(x - 2) = 27 ? x = 2.5/ x = 0.5/ x = -0.5 /x = 3.5
    8·2 answers
  • Simplify 2.8d-6+3.8-3.1d
    5·1 answer
  • I will mark brainliest
    10·2 answers
  • If you were babysitting, which would you rather: Charge $5 for the first hour and $8 for each additional hour? Charge $15 for th
    14·1 answer
  • Help!!! ASAP!!!!!!!!!!!!! 50 POINTS GOING ONCE GOONG TWICE
    9·1 answer
  • How was your day and what did u do
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!