<span>In statistics, an outlier is an observation point that is distant from other observations.
Given the points
15, 23, 24, 26, 27 and 35
Notice, that the points 15 and 35 are distance from the other points and hence are outliers.
The mean of the observations including the outliers is given by

The mean of the observations without the outliers is given by

Therefore, </span>when <span>the outliers are removed,
the mean remains the same.</span>
Answer:
firt thing i would do is take out things that are alike but if these are the options then i would a) multiply the first equation by -1
=
(
−
2
y
)
(
2
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+
6
y
−
1
+
−
1
(
(
−
4
y
)
(
2
)
−
3
y
+
9
)
=
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−
2
y
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(
2
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+
6
y
+
−
1
+
−
1
(
(
−
4
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(
2
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+
−
1
(
−
3
y
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+
(
−
1
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(
9
)
=
(
−
2
y
)
(
2
)
+
6
y
+
−
1
+
8
y
+
3
y
+
−
9
=
−
4
y
+
6
y
+
−
1
+
8
y
+
3
y
+
−
9
Combine Like Terms:
=
−
4
y
+
6
y
+
−
1
+
8
y
+
3
y
+
−
9
=
(
−
4
y
+
6
y
+
8
y
+
3
y
)
+
(
−
1
+
−
9
)
=
13
y
+
−
10
Answer:
Step-by-step explanation:
Let the number of notes is x.
<u>20% of notes is: </u>
<u>40% of the remainder is: </u>
- 40% of 0.8x, so it is
- 0.8x*0.4 =
- 0.32x
<u>Remaining notes are:</u>
<u>Total of the notes:</u>
- 0.2x*10 + 0.32x*5 + 0.48x*2 = 1026
- 2x + 1.6x + 0.96x = 1026
- 4.56x = 1026
- x = 1026/4.56
- x = 225
EX. 3x+3x. You will leave the variable alone. You add the constants (3 and 3). The answer is 6. Because of that x, the answer is 6x.
EX. 3x times 3x. Again you will leave the x alone. You multiply the constants (3 and 3). The answer is 9. Because of the x, the answer is 9x.