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Alexus [3.1K]
3 years ago
15

Which of the choices is the standard deviation of the sample shown here?

Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0
Mean = (19 + 20 + 21 + 22 + 23)/5 = 105/5 = 21
x    x - mean   (x - mean)^2
19     -2                4
20     -1                1
21      0                0
22      1                1
23      2                4
               Sum = 10

Standard deviation = sqrt(sum(x - mean)^2 /n) = sqrt(10/5) = sqrt(2)
kati45 [8]3 years ago
5 0

Answer:

C for apex

Step-by-step explanation:


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Which statement is true about vertical angles. 1 point Vertical angles are congruent if two lines are parallel. If vertical angl
Serhud [2]

Answer:

Vertical angles are always congruent.

Step-by-step explanation:

Vertical angles are formed when two straight lines intersect each other, thereby forming two pairs of opposite angles, which are called vertical angles. Thus, a pair of these vertical angles formed are congruent to each other. So therefore, if two angles are said to be vertical angles, it follows that they are congruent to each other.

Using the diagram attached below, we can see two straight lines intersecting each other to form two pairs of vertical angles:

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Thus, <a is congruent to <b, and <c is congruent to <d.

Therefore, the standby that is true about vertical angles is that:

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8 0
3 years ago
The diagram rerpesents responses to a survey that include statements p and q . Which statement is true?
BARSIC [14]

Answer:

C. The number of responces p\vee q is also 46

Step-by-step explanation:

Note that:

  • p\wedge q means both p and q must hold;
  • p\vee q means either p or q must hold.

From the diagram,

  • the number of responses p\wedge q is 46;
  • the number of responces p\vee q is also 46;
  • the number of responces p\setminus q is 0;
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So, you can state that the correct answer is C

4 0
3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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