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tankabanditka [31]
3 years ago
5

Both sets of values have an average of 13. Is Set A's standard deviation smaller, larger, or about the same as Set B's? (Note: T

his question can be answered by knowing the concept of standard deviation, without actually computing the standard deviation).
Set A: 1 2 3 23 24 25

Set B: 8 10 12 14 16 18
Mathematics
1 answer:
Softa [21]3 years ago
5 0

Answer:

  Set A's standard deviation is larger than Set B's

Step-by-step explanation:

Standard deviation is a measure of variation. One way to judge the value of standard deviation is by looking at the range of the data. In general, a dataset with a smaller range will have a smaller standard deviation.

The range of data Set A is 25-1 = 24.

The range of data Set B is 18-8 = 10.

Set A's range is larger, so we expect its standard deviation to be larger.

__

The standard deviation is the root of the mean of the squares of the differences from the mean. In Set A, the differences are ±12, ±11, ±10. In Set B, the differences are ±5, ±3, ±1. We don't actually need to compute the RMS difference to see that it is larger for Set A.

Set A's standard deviation is larger than Set B's.

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Find (-21)+(-13)+20.
Fed [463]

Answer:

14

Step-by-step explanation:

-21+-13+20=14

This is true because when subtracting negatives by negatives you pretty much add them and then when you add a positive to a negative you are technically removing the negative by the amount you are adding.

In short its kind of like using inverse operation in a way.

Hope this helps and have a nice day

Also may I please have a brainliest!!!

5 0
3 years ago
The cars are waiting in line for gas Nini is 9th front the front of the line and 20 from the back how many cars are on line for
vovangra [49]
28 cars are on the line for gas.
5 0
3 years ago
PLEASE HURRY !!
irakobra [83]

Answer:

49

Step-by-step explanation:

So it seems theres some sort of pattern. When you mutiply 7 by 3 you get 21. When you multply 5 by 7 you get 35. So basically 7 times 7 would be 49. Correct me if im wrong.

7 0
2 years ago
Read 2 more answers
Step by step explanation please
galina1969 [7]

Two equal triangles

2(1/2×b×h)

=2(1/2×8×10)

= 80 {cm}^{2}

Three rectangles

=3(l×h)

=3(18×8)

=3(144)

432 {cm}^{2}

Total Surface area

80 {cm}^{2}   +  432 {cm}^{2} \\ 512 {cm}^{2}

8 0
3 years ago
A curve passes through the point ( 0 , 7 ) (0,7) and has the property that the slope of the curve at every point P P is twice th
STatiana [176]

Answer:

The equation for the curve is:

f(x) = 7*e^{2*x}

Step-by-step explanation:

We know that for a curve defined as:

y = f(x)

The slope of the curve at the point x is:

y = f'(x)

where f'(x) = df(x)/dx

Here we know that we have a function that passes through the point (0, 7)

We also know that the slope of the curve at every point is twice the value of the y-coordinate. (remember that the y-coordinate is given by f(x))

Then we have two equations:

f(0) = 7

f'(x) = 2*f(x)

From the shape of the equation, we can assume than this is an exponential equation like:

f(x) = A*e^{k*x}

Replacing that in the second equation, we get:

k*A*e^{k*x} = 2*A*e^{k*x}

From that equation, we can conclude that k = 2

Then:

f(x) = A*e^{2*x}

Now we can use the first equation:

f(0) = 7

With this, we can find the value of A.

f(0) = 7 =  A*e^{2*0}\\7 = A*e^0 = A*1\\7 = A

Then we can conclude that the equation for the curve is:

f(x) = 7*e^{2*x}

6 0
2 years ago
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