Data quality may be assessed using six different factors.

The rate of change of revenue (in dollars per calculator) from the sale of x calculators is R'(x) = (x + 3) In (x + 3). Find the total revenue from the sale of the first 17 (x+ 3)² calculators. (Hint: In this exercise, it simplifies matters to write an antiderivative of x + 3 as 2 + 3x.) 2 rather than The total revenue is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to two decimal places as needed.)

Consider the following formula: y i - ( β 0 ^ + β 1 ^ x i ) . What does this formula describe?     OLS slope estimator     Error term     Causal effect of x on y     residual

In your own words, describe what the difference is between an error term and a residual. How does sample size affect the variance of each?

Taubman et al., (2014) used data collected in the Portland, OR metro area to study the Impact Medicaid on emergency department (ED) use. The figure below shows the percent of respondents who have been to the ED at all (left hand side of the figure) and the average number of ED visits (right hand side of the figure). The dark blue bars represent the mean for the control group, and the light blue bars add in the "Medicaid" effect found in the paper. The black "capped" bar represents the confidence interval for the Medicaid effect. Percent with Any Visits 50 €30 20 10 O Any O O Any and Total ED Use Emergency Department Data Control Mean Control Mean plus Medicaid Effect Cl for Medicaid Effect The results above imply that the price elasticity of demand for emergency department use is Number of Visits perfectly inelastic not perfectly inelastic perfectly elastic

Explain Standard errors for TSLS (two stage least squares)?

Exercise 3.2 A three-man board, composed of A, B, and C, has held hearings on a personnel case involving an officer of the company. This officer was scheduled for promotion but, prior to final action on his promotion, he made a decision that cost the company a good deal of money. The question is whether he should be (1) promoted anyway, (2) denied the promotion, or (3) fired. The board has discussed the matter at length and is unable to reach unanimous agreement. In the course of the discussion it has become clear to all three of them that their separate opinions are as follows: • A considers the officer to have been a victim of bad luck, not bad judgment, and wants to go ahead and promote him but, failing that, would keep him rather than fire him. ⚫ B considers the mistake serious enough to bar promotion altogether; he'd prefer to keep the officer, denying promotion, but would rather fire than promote him. ⚫ C thinks the man ought to be fired but, in terms of personnel policy and…

Write a brief interpretation of the data shown and the plotting in Quadrant 2 (Aggressive)

Thank you for answering Exercise 5. Please answer Exercise 6, thank you.