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kirza4 [7]
3 years ago
14

Explain what is meant when it is said that​ "data vary". How does the variability affect the results of statistical​ analysis?

Mathematics
1 answer:
topjm [15]3 years ago
8 0

Step-by-step explanation:

To say "data vary" means the component opinions change from person to person. Particularly for certain people, certain parameters can change over time. Since the data vary, two separate statistical analyzes of the same variable can result in different outcomes. Thus statistical analyses should take into account this possible variability and thus we can never be 100% sure about the results of the statistical analysis.

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Using graph paper, determine the line described by the given point and slope. Click to show the correct graph below. (0, -2) and
BaLLatris [955]

Answer:

y = -(5/2)x -2

Explanation:

The general formula for a straight line is y – mx + b.

The image below shows the graph of the line.

Step 1. <em>Calculate the slope</em>.

Slope = m = Δy/Δx = (y₂-y₁)/(x₂-x₁)

x₁ = 0; y₁ = -2

x₂ = -2; y₂ = 3     Calculate m

m = [3-(-2)]/(-2-0)

m = (3+2)/(-2)

m = 5/(-2)

m = -5/2

Step 2. <em>Calculate the y-intercept </em>

When x = 0, y = 2.

The y-intercept (b) is at y = -2

Step 3. <em>Write the equation </em>for the graph

y = mx + b

y = -(5/2)x - 2

3 0
2 years ago
Read 2 more answers
Question 2(Multiple Choice Worth 1 points) (06.01) Solve 2x + 5y = −13 3x − 4y = −8 (4, 1) (−4, 1) (4, −1) (−4, −1)
dlinn [17]
ANSWER

The solution is
(-4,-1)


EXPLANATION

The given equations are:

2x + 5y =  - 13...(1)

and

3x - 4y =  - 8...(2)


We multiply equation 1 by 3 to get,

6x + 15y =  - 39...(3)

We multiply equation 2 also by 2 to get,

6x - 8y =  - 16...(4)

We subtract equation 4 from equation 3 to get,


23y =  - 23
This implies that,

y =  - 1

We put this value of y into any of the equations say equation 2

3x - 4( - 1) =  - 8
Simplify

3x + 4 =  - 8
Group like terms
3x =  - 8 - 4
Simplify,

3x =  - 12

Divide both sides by 3 to get,

x =  - 4


Therefore the solution is
(-4,-1)

The correct answer is option D.
3 0
3 years ago
Can someone help me please with correct answers
kenny6666 [7]

Answer:  

15.59 cm^2  

Step-by-step explanation:  

Given formula for area= √(3s^4)/4  

We have, a=6cm  

Area= √(3s^4)/4 = √(3*6^4)/4 =√(3*1296)/4 =√3888/4 ≈ 62.35/4 ≈ 15.59 cm^2

7 0
2 years ago
Hellllllllllp! Someone help
uysha [10]

Answer:

4. (2, 3)

5. (0, 1)

7. (-1, 2)

Step-by-step explanation:

I hope this helps! Have a nice dayy! :)

3 0
3 years ago
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How many solutions does the polynomial equation ( x+8)2( x-1) = 0
Olin [163]

Answer:

-8 and 1

Step-by-step explanation:

8 0
3 years ago
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