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Gelneren [198K]
3 years ago
6

HELP PLEASE! Find the standard deviation for Data set 1 and 2. round to the nearest hundred. DATA SET ONE: 8.2, 11.6 8.7, 10.6,

9.4, 10.1, 9.3 DATA SET TWO: 9.3, 10.2, 8.1, 12.3, 8.7, 9.9, 10.1
Mathematics
1 answer:
Elan Coil [88]3 years ago
3 0

Answer:

0.92 and 1.25 respectively

Step-by-step explanation:

0.92 and 1.25 respectively

first the mean of each value which is 9.7 and 9.8 respectively

standard deviation = square root of the mean deviation of each value

then deduct the mean from each element

and square each value and add them together. not you should square each deviation value before you add them

at last divide the result by the number of frequency and find it's square root

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Two similar circles are shown. The circumference of the larger circle, with radius OB, is 3 times the circumference of the small
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Answer:

The circumference of the smaller circle is:

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Step-by-step explanation:

We know that for a circle of radius R the circumference is given by:

C = 2*pi*R

where pi = 3.14...

Here we have two circles, A and B, where B is the larger circle and A is the smaller circle.

We know that:

The circumference of B is 3 times the circumference of A.

The radius of circle B is: OB = x

The radius of circle A is: OA

We want to find an expression of OA.

The circumference of circle B will be:

C(B) = 2*pi*OB = 2*pi*x

The circumference of circle A will be:

C(A) = 2*pi*OA

And we know that the circumference of circle B is 3 times the circumference of circle A, then:

C(B) = 3*C(A)

replacing the equations for the circumferences, we get:

2*pi*x = 3*(2*pi*OA)

dividing both sides by 2*pi, we get:

x = 3*OA

Now we want to solve this for OA, then we need to isolate it,

x/3 = OA

We can conclude that the radius of the smaller circle is equal to x/3.

Then the circumference of circle A is:

C(A) = 2*pi*x/3

5 0
2 years ago
Whats the least common multiple of 7, 9, and 21
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Step-by-step explanation:

8 0
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Burger patties come packed 8 in a package, and burger buns come packed 12 in a package. We want to buy the least number of patti
seraphim [82]

Answer: but will soon find out

Step-by-step explanation:

6 0
2 years ago
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2/5 is larger than 1/4. What is the difference?
Mila [183]
If you convert the fractions to ___/20 then you will see. Here; 2/5 = 8/20. 1/4 = 5/20. I hope this helps. 
6 0
3 years ago
What is the discriminant of 3 x squared minus 10 x = negative 2?
sasho [114]

<u>Answer</u>:

The discriminant of 3 x squared minus 10 x = negative 2 is  76

<u>Explanation</u>:

<u>Given</u>:

3x^2-10x=-2

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We can find out the discriminant by using the formula

D=b^2-4ac

So from the equation (1)

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Now put all these values of a,b and c in the formula of discriminant to find out the value of D

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5 0
2 years ago
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