Sampling Distributions Stats
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Anthony Clark
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is central limit theorem?
observation for center, spread, shape
observation for the sample, spread, shape
observation for the shape, size, and variation
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sample distribution for x is centered at the population median
True
False
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
As n gets larger, the spread of the sampling distribution of 𝑥̅ gets smaller....
True
False
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Individual observations are more variable than sample means.....
True
False
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the Law of Large Numbers?
The sample mean (𝑥̅) is going to approach the true mean (𝜇) of the population as the number of observations decreases.
The sample mean (𝑥̅) is not going to approach the true mean (𝜇) of the population as the number of observations decreases.
The sample mean (𝑥̅) is going to approach the true mean (𝜇) of the population as the number of observations increases.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is true in regards of how large n has to be?
If the distribution of the X is skewed, then a sample size n of at least 25 or 30 yields an adequate approximation.
If the distribution of the X is slightly skewed, then a sample size n of at least 25 or 30 yields an adequate approximation.
If the distribution of the X is extremely skewed, then a sample size n of at least 25 or 30 yields an adequate approximation.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the distribution of the X is extremely skewed.....
then you may need an even smaller n
then you may need an even larger n
then your n is perfect
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