BESC 3010 POSTTEST 3 QUESTIONS
AND ANSWERS | LATEST UPDATE |
2024/2025 | GRADED A+
What is the definition of a statistic?
A statistic is a numerical characteristic or measure obtained by using the data values from a
sample.
What is the difference between a parameter and a statistic?
...
BESC 3010 POSTTEST 3 QUESTIONS
AND ANSWERS | LATEST UPDATE |
2024/2025 | GRADED A+
What is the definition of a statistic?
✔✔A statistic is a numerical characteristic or measure obtained by using the data values from a
sample.
What is the difference between a parameter and a statistic?
✔✔A parameter is a numerical characteristic of a population, while a statistic is a numerical
characteristic of a sample drawn from that population.
How do you calculate the mean of a data set?
✔✔The mean is calculated by summing all the data points and dividing by the number of points
in the dataset.
What does the standard deviation measure?
✔✔The standard deviation measures the amount of variability or dispersion in a set of data
values, indicating how much the values deviate from the mean.
1
, What is a skewed distribution, and how can you identify it?
✔✔A skewed distribution is one where the data points are not symmetrically distributed around
the mean. It can be identified by comparing the mean and median; in a right-skewed distribution,
the mean is greater than the median.
What is the purpose of a hypothesis test?
✔✔The purpose of a hypothesis test is to determine whether there is enough statistical evidence
in a sample of data to support a specific claim about the population.
How do you interpret a confidence interval?
✔✔A confidence interval provides a range of values that is believed to contain the true
population parameter with a certain level of confidence, usually expressed as a percentage.
What is the significance of the p-value in hypothesis testing?
✔✔The p-value indicates the probability of observing the test results under the null hypothesis.
A low p-value suggests that the null hypothesis may be rejected.
What is the difference between Type I and Type II errors?
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SterlingScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.92. You're not tied to anything after your purchase.
