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HBX Core Final Exam with Complete Solutions $11.49   Add to cart

Exam (elaborations)

HBX Core Final Exam with Complete Solutions

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HBX Core Final Exam with Complete Solutions

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  • November 11, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • HBX
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HBX Core Final Exam with Complete
Solutions
Revenue Correct Ans-The amount of money received by a company or firm from sales of its
products or service.



Demand Curve-Shift Left Correct Ans-Lower quantity demanded.



Example-bad weather for a basketball game.



Demand Curve-Shift Right Correct Ans-Higher quantity demanded.



Example-price decrease.



Formula for calculating the minimum required sample size. Correct Ans-n>_(z*s/m)^2. z-
value associated with 95% confidence interval is 1.96.



S is std and m is Margin of error.



R-squared Correct Ans-R-squared measures how much variation in a dependent variable can
be "explained" by the variation in the independent variable(s).

, Adjusted R-squared Correct Ans-Adjusted R-Squared is equal to R-squared multiplied by an
adjustment factor that decreases slightly as each independent variable is added to a regression
model.



Use to compare two regression models that have a different number of independent variables.



Multiple Regression Correct Ans-A regression analysis with two or more independent
variables.



Square root of r2.



Heteroskedasticity Correct Ans-exhibits a funnel

shape.



Standard deviation/Mean Correct Ans-This is the formula for the coefficient of variation.




Central Limit Theorem Correct Ans-If we take a large enough samples, the distribution of
sample means will be normally distributed regardless of the shape of the underlying population.



To find P(x>115), the percent of the population has an IQ over 115. Correct Ans-First
compute the cumulative probability, P(x<_115), using the Excel function
Norm.DIST(x,mean,standard _dev,TRUE).



Thus P(x>115)=1-P(x<_115)=1-0.84=0.16, or 16%.

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