BESC 3010 - TEST 2 QUESTIONS AND ANSWERS | LATEST UPDATE | 2024/2025 | GRADED A+
3 views 0 purchase
Course
BESC 3010 -
Institution
BESC 3010 -
BESC 3010 - TEST 2 QUESTIONS AND
ANSWERS | LATEST UPDATE |
2024/2025 | GRADED A+
What is the purpose of a confidence interval in statistics?
A) To describe the spread of data
B) To estimate a population parameter with a certain level of confidence
C) To calculate the exact value of the para...
BESC 3010 - TEST 2 QUESTIONS AND
ANSWERS | LATEST UPDATE |
2024/2025 | GRADED A+
What is the purpose of a confidence interval in statistics?
A) To describe the spread of data
B) To estimate a population parameter with a certain level of confidence
C) To calculate the exact value of the parameter
D) To determine the correlation between two variables
✔✔B) To estimate a population parameter with a certain level of confidence
When using a t-test, which condition must typically be met?
A) The data must be nominal
B) The sample size must be exactly 100
C) The data should approximately follow a normal distribution
D) The data should only include whole numbers
✔✔C) The data should approximately follow a normal distribution
If two variables have a strong negative correlation, what does this imply?
1
,A) As one variable increases, the other also increases
B) As one variable increases, the other decreases
C) There is no relationship between the variables
D) Both variables stay constant
✔✔B) As one variable increases, the other decreases
What does a p-value of 0.03 indicate in hypothesis testing with a significance level of 0.05?
A) The null hypothesis is rejected
B) The null hypothesis is accepted
C) There is no relationship between variables
D) A larger sample is needed
✔✔A) The null hypothesis is rejected
What does a high standard deviation signify about a dataset?
A) Data points are closely clustered around the mean
B) There is more variability in the dataset
C) The dataset has only a few unique values
D) The data points are all identical
2
, ✔✔B) There is more variability in the dataset
When calculating the mean of a dataset, what is being determined?
A) The most frequently occurring value
B) The central tendency of data
C) The minimum value
D) The range of data
✔✔B) The central tendency of data
In a normal distribution, what percentage of data typically falls within one standard deviation of
the mean?
A) 50%
B) 68%
C) 75%
D) 95%
✔✔B) 68%
What is the purpose of a hypothesis test in statistics?
3
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 $9.71. You're not tied to anything after your purchase.
