MATHEMATICS MIDDLE SCHOOL

Which statement below is incorrect?-The mean is not affected by the existence of an outlier.
-The median is not affected by the existence of an outlier.
-The standard deviation is affected by the existence of an outlier.
-The interquartile range is unaffected by the existence of an outlier.

Answers

Answer 1
Answer:

Answer: -The mean is not affected by the existence of an outlier.


Step-by-step explanation:

An outlier is an ultimate value in a set of data that is very much higher or lower than the other numbers. Mean is the only central tendency which is affected by the outlier. (It also affect the standard deviation)

It can affect the mean of a data set by skewing the results so that the mean is no longer representative of the data set.

The median and the interquartile range is unaffected by the existence of an outlier.
Answer 2
Answer:

Answer: The mean is not affected by the existence of an outlier.

Step-by-step explanation it’s on math nation

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On her first quiz in social studies, Meg answered 92% of the questions correctly. On her second quiz, she answered 27 out of 30 questions correctly. On which quiz did Meg have the better score?

Answers

Meg has better score in quiz on first quiz.

What is Percentage?

Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.

So the percentage actually means a part per 100.

Percentage is usually denoted by the symbol '%'.

Given that,

Percentage of questions Meg answered correctly in the first quiz = 92%

On her second quiz, she answered 27 out of 30 questions correctly.

Percentage of questions Meg answered correctly in the second quiz  

= (27 / 30) × 100

= 0.9 × 100

= 90%, which is less percentage than the one on the first quiz.

Since the percentage of correctly answered questions in the first quiz is greater than that of the second quiz, Meg has better score on first quiz.

To learn more about Percentage, click on the link below :

brainly.com/question/30127793

#SPJ2
there both the same score. she has the same score on each test. i hope this helps:)

$16 for 2 tickets; $40 for 5 tickets

Answers

16:2 and 40:5. These are ratios.

$16 and 2 tickets for the unit rate is 8/1.
$40 and 5 tickets for the unit rate is 8/1
$16 for 2 tickets:
$16/ 2 tickets= $8/ticket.

$40 for 5 tickets:
$40/ 5 tickets= $8/ticket

The unit rate is $8/ ticket.

Turn 0.12 to a fraction

Answers

12/100
6/50
3/25


once fully simplified 3/25 is your answer

Evelyn goes to a middle school that includes grades 6, 7, and 8. She wants to estimate the percentage of students in the school who ride the bus to school. She selects a random sample of 200 students to survey who are attending an after-school activity. She determines that 38% of the students at the activity ride the bus to school.Which statement about Evelyn's sample is true?

A. The sample is the percentage of students who ride the bus.
B. The sample might not be representative of the population because it only includes students who are attending an after-school activity.
C. The sample shows that exactly 38% of the students in the school ride the bus.

Answers

B. The sample might not be representative of the population because it only includes students who are attending an after-school activity.
I personally, would choose B.

An artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. The width of the lake is 1/5 the length of the lake. What are the dimensions of the lake?

Answers


We know that the area of a rectangle can be written as: length x width

so:

l x (1/5) = 9/20

9/20 x 5/1 = 45/20, which can be reduced to 9/4

So the length is 9/4 miles

A+63 b+52c equal if a=6, b=51 and c=1/4

Answers

I did both things cas you left a space in between 63 b
A + 63 + b + 52c        or        A + 63b + 52c
6 + 63 +51+ 52 * 1/4             6 + 63 * 51 + 52 * 1/4
6 + 63 + 51 + 13.5                 6 + 63 * 51 + 13.5
69 + 51 + 13.5                       69 * 51 +13.5
120 + 13.5                             3519 + 13.5
133.5 0r 133 1/2                    3532.5 0r 3532 1/2
WELCOME :/
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