Discussion of the relative intelligence of the two candidate

Assignment Help Basic Statistics

Reference no: EM131816802

Before the presidential election of 2004, there was much discussion of the relative intelligence of the two candidates, George W. Bush and John Kerry. After critics of Bush suggested that his IQ was on the low side, his defenders used a regression on his SAT score (1206) to estimate his IQ to be 124. Kerry's IQ was presumably about 122, based on his purported SAT score of 1190.

a. Correlation between SAT score and IQ is somewhere between 0.5 and 0.6. Is the relationship weak, moderate, or strong?

b. Standard deviation for IQ is about 15, and s (typical error size) for the prediction of IQ based on SAT score would be about 10. What is the range of IQ scores that are within about one s of the prediction for Bush's IQ, 124?

c. What is the range of IQ scores that are within about one s of the prediction for Kerry's IQ, 122?

d. Comment on the validity of a claim that Bush's IQ was about 2 points higher than Kerry's, based on their SAT scores.

e. Which should we be able to predict more accurately: IQ of one individual whose SAT score was 1206, mean IQ of all those whose SAT score was 1206, or both the same?

f. Based on samples, we can get a rough idea of the equation for the regression line that relates IQ to SAT for everyone who took the SAT test, but the actual intercept and slope for the entire population are unknown. Are these denoted b0 and b1 or b0 and b1?

Reference no: EM131816802

Questions Cloud

Prepare a multi-step income statement : Prepare a multi-step income statement, Prepare a single-step income statement

Find attendance per show required to cover weekly expenses : Broadway ticket prices average $60, and theaters can seat about 1,000 persons per show. Off-Broadway prices average only $40, and the theaters seat only 500.

Relationship between two quantitative variables : A newspaper report on results of the American Time Use Survey of 2003 mentions the "decades-long trend of people moving farther away.

Determine the markup percentage on total cost : Jamison Company produces and sells Product X at a total cost of $25 per unit, Determine the markup percentage on total cost

Discussion of the relative intelligence of the two candidate : Before the presidential election of 2004, there was much discussion of the relative intelligence of the two candidates

Describe the potential barriers of e-learning readiness : Describe the potential barriers of e-learning readiness. Analyze how e-learning readiness has affected your success at Ashford University.

African aids patients more diligent in taking medicine : "African AIDS Patients More Diligent in Taking Medicine Than in U.S." was reported in 2003. On average, "American patients tell their doctors

Explanation for the positive correlation : The relationship between students' weights and earnings was explored. Because gender would play a role in both variables' values, regression

Explain the impact of failure to comply with state laws : Explain the impact of failure to comply with state laws, and statutes in health care. Be sure to include doctrine of corporate negligence in your answer.

User Account

All Pages