Exam (elaborations)
Business Stats Final Exam/27 questions with Verified Answers
- Course
- Institution
Business Stats Final Exam/27 questions with Verified Answers
[Show more]
Content preview
Business Stats Final Exam/27questions with Verified Answers
What type of relationship exists between X and Y if as X increases Y
increases? - - Positive
- In hypothesis tests about the population correlation coefficient, p, the null
hypothesis for a two-tailed test is - - H0: p = 0
- To calculate the critical value of the correlation coefficient one will need to
find the critical t statistic using n - _____, degrees of freedom - - 2
- What type of relationship exists between X and Y if as X increases Y
decreases? - - Negative
- What type of linear relationship appears to exist between two variables if F
(x,y) = 0.83 - - strong, positive
- In hypothesis tests about the population correlation coefficient, p, the
alternative hypothesis for a two-tailed test is - - H1: p =/ 0
- When using a simple regression equation for predicting a response
variable, ______ or predicting outside the range of observed x values, should
be approached with caution - - extrapolation
- The formula for calculating the two-tailed critical value of r, the sample
correlation coefficient is: - - r critical = t/ sqrt (t^2 + n -2)
- With the population linear model: Y = B0 + B1X + EB1 represents the - -
slope population parameter
- In statistics, a straight-line model of the relationship between two
variables, X and Y, is called a - - simple regression equation
- Which of the following sample correlation coefficient shows the strongest
association between X and Y? - - -0.95
- True or False: Once your data have been plotted on an Excel scatterplot
you can fit a regression line to the points using the Trendline option - - True
- If the sample regression equation is found to be ŷ = 10 + 2x, what is the
estimated value of Y if x =5? - - 20
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 Nursephil2023. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82956 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now