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
vagabundo [1.1K]
2 years ago
15

The data to represent average test scores for a class of 16 students includes an outlier value of 78. If the mean, including the

outlier of 78, equals 84, which statement is always true about the new data when the outlier is removed?
The mean would increase.
The mean would decrease.
The median would increase.
The median would decrease.
Mathematics
2 answers:
monitta2 years ago
8 0

Answer:

Given that The data to represent average test scores for a class of 16 students includes an outlier value of 78.

We can find sum of all 16 test scores = 84(16) = 1344

Outlier found = 78

If outlier is removed new sum = 1344-78 = 1266

Number of entries without outlier = 15

New average = 1266/12 =84.4

We find that average of new data increases.

Also whenever we remove outlier std deviation also would be reduced.

Step-by-step explanation:

Karolina [17]2 years ago
6 0

Answer:

The mean would decrease.

Step-by-step explanation:

Without the outlier, the mean decreases. The median stays the same with or without the outlier.

You might be interested in
what is the equation of the line that is parallel to 6x-2y=4+6y and passes through the point (8, -16)?
Alisiya [41]

Answer:

y=\frac{3}{4}x-22

Step-by-step explanation:

We are given;

  • The equation of a line 6x-2y=4+6y
  • A point (8, -16)

We are required to determine the equation of a line parallel to the given line and passing through the given point.

  • One way we can determine the equation of a line is when we are given its slope and a point where it is passing through,

First we get the slope of the line from the equation given;

  • We write the equation in the form y = mx + c, where m is the slope

That is;

6x-2y=4+6y

6y + 2y = 6x-4

8y = 6x -4

We get, y = 3/4 x - 4

Therefore, the slope, m₁ = 3/4

But; for parallel lines m₁=m₂

Therefore, the slope of the line in question, m₂ = 3/4

To get the equation of the line;

We take a point (x, y) and the point (8, -16) together with the slope;

That is;

\frac{(y--16}{x-8}=\frac{3}{4}

4(y+16)=3(x-8)\\4y + 64 = 3x - 24\\4y=3x-88\\ y=\frac{3}{4}x-22

Thus, the equation required is y=\frac{3}{4}x-22

4 0
3 years ago
Jack's last six scores are 75,78,83,80,79,84. If he scores a 90 on the next test, by how much will his mean test score increase?
kondaur [170]

Answer:

1.46

Step-by-step explanation:

First find the the mean score before he made a 90.

\frac{75+78+83+80+79+84}{6} = 79.83

Now add the score of 90 and calculate.

\frac{75+78+83+80+79+84+ 90}{7} = 81.29

Subtract the two scores.

81.29-79.83 = 1.46

His mean test score increased by 1.46.

8 0
3 years ago
What do x square equal
malfutka [58]
X * x

or

x times x

or

x times itself

or

x squared

all means the same thing
7 0
2 years ago
Write a fraction and a percent for the shaded portion of each one.
Cerrena [4.2K]
I dunno if im correct, but for A. I’d say 1/4 for B. I’d say 1 1/2 for C. 2/3
4 0
3 years ago
Read 2 more answers
-4x+6+30 for some value of x, what is the value of -2x+5, for the same value of x?
lana66690 [7]

Answer:

The value of X is 15.5.

7 0
2 years ago
Other questions:
  • A television sells for 900. Instead of paying the total amount at the time of the purchase the television can be bought by payin
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B20%7D%20" id="TexFormula1" title=" \sqrt{20} " alt=" \sqrt{20} " align="absmiddle
    8·1 answer
  • Four more than twice a number is 8
    15·2 answers
  • So 9x 4x#$ GOOD MATH BAD EGLISH
    15·1 answer
  • Given the equation 2x-5=8 which order of operations completely solves for x
    5·1 answer
  • Please help me
    14·2 answers
  • Find the are of the ABC triangle​
    9·2 answers
  • Tyler's mom purchased a savings bond for Tyler. The value of the savings bond increases by 4% each year. One year after it was p
    7·1 answer
  • How do I get the answer to this problem​
    15·1 answer
  • Please look at the picture, I need help ASAP.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!