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Sidana [21]
3 years ago
7

How do you use standard deviation?

Mathematics
2 answers:
Ahat [919]3 years ago
3 0

Standard deviation is like the average range values are away from the mean/median. So if you remember box and whisker plots, It is 2 boxes with 2 lines coming from them. Where the boxes meet is the mean/median depending on what you are trying to find, and the edges of the boxes are the normal distribution of values, and the lines go out, and that's the standard deviation. The values outside of those lines are outliers. A way you can think about it, is if let's say I had 3 numbers: 7,8,9. Now the mean/median is 8, and for this the standard deviation is 1 because most numbers that are not the median/mean are 1 value from the median/mean. It is a way of measuring an element of range. I hope this helped.

Jlenok [28]3 years ago
3 0
Work out the Mean (the simple average of the numbers)
Then for each number: subtract the Mean and square the result.
Then work out the mean of those squared differences.
Take the square root of that and we are done!
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Leila says that 75% of a number will always be greater than 50% of any other number. Complete one inequality to support Leilas c
Greeley [361]
If a number is positive, Leila's theory that 75% of a number will always be greater than 50% of another number is <em>true</em>;<em> </em>however, if both numbers are negative, or if the number of which she finds 50% is much greater than the number of which she finds 75%, Leila's theory could be incorrect.

This inequality shows that Leila is correct: 100(0.75) \geq 50(0.50) (which simplifies to 75 \geq 25)

This inequality shows that Leila is incorrect: 50(0.75) \geq 100(0.50) (which simplifies to 37.5 \geq 50)

Hope this helps!
6 0
3 years ago
Read 2 more answers
Condense the expression to the logarithm of a single quantity.<br><br>​
vladimir1956 [14]

Answer:

\log _3\left(\frac{x^{\frac{1}{2}}}{\left(y+8\right)^2}\right)

Step-by-step explanation:

-> Apply log rules

\log _3\left(x^{\frac{1}{2}}\right)-2\log _3\left(y+8\right)

->

\log _3\left(x^{\frac{1}{2}}\right)-\log _3\left(\left(y+8\right)^2\right)

-> Apply basic math rules

\log _3\left(\frac{x^{\frac{1}{2}}}{\left(y+8\right)^2}\right)

7 0
2 years ago
2x - 5[4 + 3 (x + 2)] = 9​
Ugo [173]

Step-by-step explanation:

i hope you will get the answer

6 0
3 years ago
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A circle with radius of 6 cm sits inside a circle with a radius of 9 cm, what is the area of the shaded region?
SpyIntel [72]

Answer:

128.8cm^2

Step-by-step explanation:

area of circle with radius 6cm = π6^2

area of circle with radius 9cm = π9^2

shaded region is equal to π9^2 - π6^2

which is 41π

therefore the shaded region is = 128.8cm^2

4 0
3 years ago
22 less than 6 times a number is 92. What is the number?
Romashka [77]

Answer:

n=19

Step-by-step explanation:

6n - 22 = 92

    + 22 +22

----------------------

<u>6n</u> = <u>114</u>

6      6

n = 19

4 0
3 years ago
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