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3 years ago

Which value in the data set is an outlier?

Mathematics

1 answer:

lidiya [134]3 years ago

3 0

22 is an outlier in the given data set

Step-by-step explanation:

Given data set is:

7, 8, 9, 10, 10, 22

First of all, we have to defined an outlier.

An outlier is a thing that is far away from the main body.

The mathematical or statistical definition says:

"The value in the data set that is far away from the values in the data set is called outlier"

In the given data set,

The value 22 is an outlier, as all the other values are close to each other except 22

Hence,

22 is an outlier in the given data set

Keywords: Outlier, data set

Learn more about data set at:

#LearnwithBrainly

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3 years ago

Two customers went to a post office to buy postcards and large envelopes. Each postcard

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The right answer is Option A.

Step-by-step explanation:

Let,

x be the postcards

y be the large envelops

According to given statement;

14x+5y=12 Eqn 1

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$3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3$

Subtracting Eqn 2 from Eqn 3;

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Dividing both sides by 32

$\frac{32x}{32}=\frac{11.20}{32}\\x=0.35$

Putting x=0.35 in Eqn 1;

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Dividing both sides by 5

$\frac{5y}{5}=\frac{7.10}{5}\\y=1.42$

Therefore, one large envelope costs $1.42

The right answer is Option A.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

Solve for x. Round to the nearest tenth of a degree, if necessary.

ziro4ka [17]

Answer:

x ≈ 28.8°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin x = $\frac{opposite}{hypotenuse}$ = $\frac{AB}{AC}$ = $\frac{3.9}{8.1}$ , then

x = $sin^{-1}$ ( $\frac{3.9}{8.1}$ ) ≈ 28.8° ( to the nearest tenth )

3 0

2 years ago