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marta [7]
3 years ago
5

Which formula is used to calculate the standard deviation of sample data?​

Mathematics
2 answers:
Reptile [31]3 years ago
8 0

Answer:

Standard deviation (S) = square root of the variance

Standard deviation is the measure of spread most commonly used in statistical practice when the mean is used to calculate central tendency. Thus, it measures spread around the mean

Step-by-step explanation:

abruzzese [7]3 years ago
6 0

Answer:

Its A., the first one on edge 2020

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Find the 5th term of the expansion of ( 6x + 6y)^11
Elodia [21]

The 5 th term of the given expression is 330(6x)^{7}( 6y)^{4}.

Step-by-step explanation:

Given,

(6x+6y)^{11}

To find the 5th term of the given expression.

Formula

In a binomial series (a+b)^{n}, the r th term is = nC(r-1) a^{n-r-1} b^{r-1}, where,

nC(r-1) = \frac{n!}{(r-1)!(n-r+1)!}

Now,

Putting, n=11, r = r, a=6x and b=6y we get,

5 th term = 11C4(6x)^{7}( 6y)^{4}

= \frac{11!}{4!7!}(6x)^{7}( 6y)^{4}

= \frac{11X10X9X8X7!}{7!X4X3X2X1}(6x)^{7}( 6y)^{4}

= 330(6x)^{7}( 6y)^{4}

Here is the answer.

6 0
3 years ago
The equation of the graphed line is x+2y=5. What is the x-intercept of the graph?
Nady [450]

Answer:

x = (5,0)

Step-by-step explanation:

To find the x-intercept, substitute y with 0 and solve for x.

x + 2(0) = 5

Then, simplify.

Multiply 2 by 0.

x + 0 = 5

Add x and 0.

x = 5

So, the result will be x = (5,0)

3 0
2 years ago
A store sold 6 3/8 boxes
melisa1 [442]

Answer:

We add the two fractions:

6 3/8 + 7 2/5 = 13 31/40 boxes of candy bars.

7 0
3 years ago
Read 2 more answers
What is the value of x?
77julia77 [94]

Answer:

x= -2.2

Step-by-step explanation:

5x+3= -8

5x=-11

x= -2.2

6 0
3 years ago
Claire has a hot tub with a diameter of 7 feet. She wants to purchase a cover to protect the hot tub. What is the area of the co
andrew11 [14]

Answer:

121 square feet

Step-by-step explanation:

A= Pi*r^2

(3.14*3.5)^2=120.7801

4 0
3 years ago
Read 2 more answers
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