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anygoal [31]
3 years ago
10

What happens to the standard deviation of the average of a sample as the sample size increases? Group of answer choices It gets

smaller It gets bigger It stays the same It depends on the value of the average
Mathematics
1 answer:
NeX [460]3 years ago
3 0

Answer:

Gets smaller

Step-by-step explanation:

- The standard deviation is the quantification of spread of data. According to descriptive statistics the standard deviation s is given by:

                             s = Σ (  x - u ) / sqrt ( n )

Where, n : sample size

            u : Mean value

- So we see that standard deviation (s) is inversely proportional to square root of sample size (n).

- We can see that as sample size (n) increases the standard deviation (s) decreases.

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Step-by-step explanation:

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3 0
3 years ago
There is a bag of 50 marbles.
SVETLANKA909090 [29]

Answer:

If you want to find the probability of picking out a certain colored marble after you have already picked one out, then the probability changes, because now the total number of marbles you have is 32 instead of 33, and the probability of  the color you could pick out can change depending on what marble you picked out first.

For example, if you want to know the probability of picking out an orange marble the second time, and you didn't pick out a orange marble the first time, then you still have 10 orange marbles, but now you have 32 total marbles, so the probability will be 10 out of 32 instead of 10 out of 33. But if you picked out 1 orange marble already, and you didn't put it back in, then you will have a probability of picking out 9 out of 32 because there are 9 orange marbles left.

In short: If you pick a marble out the first time and then put it back in the pile before your friend picks one out, then the probability of picking a marble of a certain color will be the same the second time as the first time because there will still be the same number of marbles with the same number of the same colored marbles as the first time, but if you don't put the marble back in, then the probabilities will change.

Step-by-step explanation:

7 0
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Answer:

5x -18

<h2>I hope this helped! </h2><h3>have a nice day! :)</h3>
3 0
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salantis [7]

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Step-by-step explanation:

Your welcome :)

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