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alex41 [277]
3 years ago
5

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

Mathematics
2 answers:
Cloud [144]3 years ago
8 0

Answer:

s = sqrt [ Σ ( x i - x ) 2 / ( n - 1 ) ]

Step-by-step explanation:

where s is the sample standard deviation, x is the sample mean, x i is the ith element from the sample, and n is the number of elements in the sample. And finally, the standard deviation is equal to the square root of the variance.

Setler79 [48]3 years ago
4 0

Answer:

a

Step-by-step explanation:

e2020

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Answer is A and obtuse angle is wider than a right angle
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Jon is selling tickets for the school talent show. On the 1st day, he sold 3 senior tickets and 12 child tickets for $195. On th
Allisa [31]
<h3>Question:</h3>

<em>Jon is selling tickets for the school talent show. On the 1st day, he sold 3 senior tickets and 12 child tickets for $195. On the 2nd day he sold 13 senior tickets for $299. Find the price of a senior citizen ticket.</em>

<h3>Answer:</h3>
  • $23

Create a system of equations to help you solve this problem. The system of equations will look like: 3s + 12c = 195 and 13s = 299. The variable s represents the cost of senior tickets and the variable c represents the cost of children tickets.

\left \{ {{3s~+~12c~=~195} \atop {13s~=~299}} \right.

Solve the second equation for the variable s as this is the easiest way to solve the problem. Solve the second equation for s by dividing both sides of the equation by 13 to isolate the variable s.

s = 23

Since the question was only asking for the price of a senior citizen ticket, you are technically done. The first equation was only put there to confuse you or allow you to check your work if you needed to. The price of a senior citizen ticket (variable s) is $23.

6 0
3 years ago
Find the mode of the following set of numbers.<br> {25, 23, 25, 25, 11, 25, 23, 38, 19, 25}
sasho [114]

Answer:

25

Step-by-step explanation:

25 is the most frequent number found in the following set of numbers, so 25 would be the answer.

6 0
2 years ago
I NEED ANSWER NOW PLSSSSS​
Juli2301 [7.4K]
Associate property because he was just rearranging the numbers using parentheses. Please mark me as brainiest!
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3 years ago
Read 2 more answers
If f(x)= tan^-1(2x), find lim x-&gt;2 (f(x)-f(2))/x-2
lara [203]

Answer:

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Step-by-step explanation:

Small typing mistake, the limit is of h tending to 0.

Then

Calling the limit L

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Simplifying by h

Since h tends to 0.

4 0
2 years ago
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